Database Users

[Need Help] "Missing operating System"

Hi all,
I don't know if my problem as already been solved but I didn't found anything.
At first, I have to say I installed windows 8 as principal operating system (I know, it's stupid...).
I used windows 8 without big problem since the deployment but today, after a bug, I reboot the PC and now I have just black screen with the message "operating system missing"... The system does not boot, just black screen with the message
Does anybody have an idea how I can solve this problem ?
(Sorry for my english)

you can put dev preview DVD or USB whatever you used to install.
and run the installation and then repair Windows 8 (if it detects a Windows installed). with system restore or maybe it will repair. if not you will have to refresh your win8.
also it can be (if you have more hard drives) that you aren't starting the one with Windows 8. so you can try and see in bios if thats the case. thats when i have seen this message.

Thanks for your answer.
When I run the pc, it doesn't launch anything, just the black screen. It's probably the bios but I can't do anything, just the message but I'm not allowed to do anything :-(
Sent from my HTC Sensation 4G using XDA App

Finally, the problem is quite solved.
When I have this message, by pushing ctrl+alt+suprr, if I'm enough fast, I can push F12 and choose wich part I want to run. Then I placed my W7 backup on CD and runned it.
It was not easy but W7 is successfull restored.
Of course, all my personal data were deleted...
But whe I reboot the PC, I've always the message "missing operating system", then I have to ctrl+alt+suprr and after F12, and then choose the hard drive, and the PC W7 boot.
It's not yet perfect but for the moment the PC works...

Thats exactly i told you. of course it changes between bios and motherboard. your problem is not your windows. its the priority of your harddrive.
I dont know what motherboard you have.
so i will find pictures to explain what you have to look for. because you didnt have to repair your Windows if thats the case. the problem its (like i mentioned) your harddrive priority.
so you go to your bios and look for the Boot section.
http://www.motherboards-reviews.com...ges/ASUS_M2N68-AM_PLUS_BIOS_boot_settings.jpg
if you go to Boot Device Priority, you can check if your harddrive is second (the one with your OS) and if you want your cd or usb to boot first if not you can leave it first.
http://motherboards-reviews.com/ASU...s/ASUS_M4N78-AM_BIOS_Boot_Device_Priority.jpg
something like this.
and if that part is right you have to go to Hard disk drives
http://www.laptops-battery.co.uk/images/maintain/bios-boot-hard-disk-drives-445x261.jpg
so there you have to check if your harddrive is first or the correct one. and ready... its probably this Hard disk devices thing. and then you don't have to use that method of changing manually which boots

Thanks for your help
I'm not at home for the moment. I'll try your method tomorrow or wednesday, I'll let you know, but thank you for the time you spent on my problem.
Sent from my HTC Sensation 4G using XDA App

[Q] Window 8 wont boot up!!

Help would be great. I have a dell inspiron laptop (not sure exactly what model it is) and I made the mistake of downloading windows 8 consumer preview when it first came out and installing it directly on the laptop rather than dualboot or usb stick. It worked fine for a couple of days and then out of nowhere it wouldn't boot up. When I press the power button the screen will light up and the w8 logo will appear but it won't go past that part. Sometimes It will say auto repairing itself but I've left it on for two days to see if it would fix itself but It didn't. Is there a way to get in safe mode to atleast re install the iso file? I've been without a laptop for a couple of months already and can't afford to buy a new one!

vic509 said:
Help would be great. I have a dell inspiron laptop (not sure exactly what model it is) and I made the mistake of downloading windows 8 consumer preview when it first came out and installing it directly on the laptop rather than dualboot or usb stick. It worked fine for a couple of days and then out of nowhere it wouldn't boot up. When I press the power button the screen will light up and the w8 logo will appear but it won't go past that part. Sometimes It will say auto repairing itself but I've left it on for two days to see if it would fix itself but It didn't. Is there a way to get in safe mode to atleast re install the iso file? I've been without a laptop for a couple of months already and can't afford to buy a new one!
Click to expand...
Click to collapse
so am I correct in thinking you have no installation media at all for windows? any version?
If so do you have access to another PC because to be honest, your probably going to need it
I assume you have tried hitting F8 on boot to get to the boot menu and that didn't work either?
in terms of your hardware its cool, that's not the issue, the software is, having an install disk would have made things a lot easier....

Yes I have access to another pc and no I don't have any available. I downloaded a newer version of the win8 in ISO format and put it on a dvd disc and tried installing it through the f12 key right when you boot up. The disc drive started running but nothing happened afterwards. Windows recently released a new version of win8. Should I download that one and try it again the same way I tried the first time?

vic509 said:
Yes I have access to another pc and no I don't have any available. I downloaded a newer version of the win8 in ISO format and put it on a dvd disc and tried installing it through the f12 key right when you boot up. The disc drive started running but nothing happened afterwards. Windows recently released a new version of win8. Should I download that one and try it again the same way I tried the first time?
Click to expand...
Click to collapse
ok, you hit F12 to get in to the boot menu is that correct? then you selected the DVD drive and it made some noises but did nothing?
Ok, Boot menus can be troublesome
What I suggest is go in to the BIOS and change the boot order to DVD first THEN HDD, if that doesn't work then take the HDD out of the boot order altogether, you will need to turn it back on again though to complete the setup
also, I want you to see if the DVD boots on another computer, the first ISO I downloaded was corrupted and whilst mine booted it would always fail to install, re downloaded it and no problems at all
Its probably worth downloading the RP ISO anyway, the previous version the CP, was mass tested in the open market so any issues with installing wouldn't have been worked out in the CP, hopefully the RP would have got most of them,

Hi, i did what you recommended and it worked fine until the install process! It took me to the install screen and i pressed install. Afterwards it gave me the option of automatically doing the install or choosing custom options only. I choose the automatic and it told me that i had to remove the disc and restart the computer and re inster the disc for it to continue! The problem is that everytime i do that it wants to boot up the original way where it wouldnt work! Any ideas. Should i choose the custom option instead ( but i dont know what to choose if i do it that way)??!! Thanks for your help

Reload and options
vic509 said:
Hi, i did what you recommended and it worked fine until the install process! It took me to the install screen and i pressed install. Afterwards it gave me the option of automatically doing the install or choosing custom options only. I choose the automatic and it told me that i had to remove the disc and restart the computer and re inster the disc for it to continue! The problem is that everytime i do that it wants to boot up the original way where it wouldnt work! Any ideas. Should i choose the custom option instead ( but i dont know what to choose if i do it that way)??!! Thanks for your help
Click to expand...
Click to collapse
HI!
Yes, you are right.
Boot to the install media, at the option to do custom, select custom.
When the screen loads showing the partitions (drives)
-Click advanced on the bottom right
-highlight each partition and delete them (this will loose all data saved there but unless you have a boot disk or usb or remove the drive from the laptop, the data is usless anyway)
At this point you can click continue, or next Windows setup will auto create the partitions it needs and unpack the files, then finish install.
If you get any issues with files missing or media is corrupt from the ISO, you will need to down load it again, use the MS download manager or some manager to ensure the download is good and the file CRC matches what they have on the download site. I have seen this a lot lately so don't waste your time restarting the install if it has an error while coping files, just get a new download.
I hope this Helps.

KahulBane said:
HI!
Yes, you are right.
Boot to the install media, at the option to do custom, select custom.
When the screen loads showing the partitions (drives)
-Click advanced on the bottom right
-highlight each partition and delete them (this will loose all data saved there but unless you have a boot disk or usb or remove the drive from the laptop, the data is usless anyway)
At this point you can click continue, or next Windows setup will auto create the partitions it needs and unpack the files, then finish install.
If you get any issues with files missing or media is corrupt from the ISO, you will need to down load it again, use the MS download manager or some manager to ensure the download is good and the file CRC matches what they have on the download site. I have seen this a lot lately so don't waste your time restarting the install if it has an error while coping files, just get a new download.
I hope this Helps.
Click to expand...
Click to collapse
This does resemble a copy error, or even a hard disk/hard disk controller problem.
I have a desktop computer that will no longer boot up from any IDE devices (even if their properly formatted, it also includes any optical medium), Trying to boot from them results in a "DISK NOT BOOTABLE" (something around that, Acer's boot errors are different from the usual ones.
Anyway, back on track, before all that happened, I had trouble booting the computer from the IDE HDDs, sometimes it would boot and sometimes it stuck at the Windows 7 loading screen till it said a file was corrupt or missing, or it BSOD'd.
I also recommend re-downloading and trying the install again, in extreme cases, if you have another HDD to test, try installing it on a different HDD. If that works, the problem could be your hard disk (or something more nefarious, who knows ^_^

Windows 8 won't start

First off i apologize if this is the wrong place to ask this, i couldnt find a Q&A thread for windows, also ive spent hours on Google looking and couldn't find anything that worked, but anyway my aunt a few days ago hit her computer( shes the kind of person where if it doesn't work just hit it) and it black screended on startup, like you press the power button and nothing, its a lenovo (i dont know what model) but i booted it into recovery, did a BIOS recovery, but it didnt finish, so i checked to see if the computer was reading the hard drive and it is, im taking my Toshiba to swap the hard drive to see if thats the problem, she wants to keep all her data but i said that may not be a possibility, i just want to know if anyone here can tell me what might be the problem, im convinced its thr hard drive as the toshiba had a similiar fate a few months ago. So any help would be great, also again if this is the wrong thread im sorry
EDIT: I don't know if its Windows 7 or 8, also its current state is it stops at the lenovo boot screen

SmokeyTech1 said:
First off i apologize if this is the wrong place to ask this, i couldnt find a Q&A thread for windows, also ive spent hours on Google looking and couldn't find anything that worked, but anyway my aunt a few days ago hit her computer( shes the kind of person where if it doesn't work just hit it) and it black screended on startup, like you press the power button and nothing, its a lenovo (i dont know what model) but i booted it into recovery, did a BIOS recovery, but it didnt finish, so i checked to see if the computer was reading the hard drive and it is, im taking my Toshiba to swap the hard drive to see if thats the problem, she wants to keep all her data but i said that may not be a possibility, i just want to know if anyone here can tell me what might be the problem, im convinced its thr hard drive as the toshiba had a similiar fate a few months ago. So any help would be great, also again if this is the wrong thread im sorry
EDIT: I don't know if its Windows 7 or 8, also its current state is it stops at the lenovo boot screen
Click to expand...
Click to collapse
Try windows start up repair. easiest way to do this, get the windows installation disc and boot into that and select start up repair.
id guess a HDD failure or more likely a corruption with windows if it wasnt shut down properly
could also try a fresh install of windows, just dont format the harddrive during installation. this way windows installation should save all the old data into a (old windows) folder on the c drive

Tonian1878 said:
Try windows start up repair. easiest way to do this, get the windows installation disc and boot into that and select start up repair.
id guess a HDD failure or more likely a corruption with windows if it wasnt shut down properly
could also try a fresh install of windows, just dont format the harddrive during installation. this way windows installation should save all the old data into a (old windows) folder on the c drive
Click to expand...
Click to collapse
Thanks, the recovery just hangs, according to my aunt the computer was freaking out and started closinf things, and then nothing, i think the hard drive crashed, i told them to get a new hard drive ( i actually recommended an SSD)

SmokeyTech1 said:
Thanks, the recovery just hangs, according to my aunt the computer was freaking out and started closinf things, and then nothing, i think the hard drive crashed, i told them to get a new hard drive ( i actually recommended an SSD)
Click to expand...
Click to collapse
Before buying a new drive, put her hdd on your pc to see if it is still healthy, bad-sector-free. You check this with hdsentinel.
Also, try to boot her laptop with a hdd/ssd that is working properly.

SOADNICK said:
Before buying a new drive, put her hdd on your pc to see if it is still healthy, bad-sector-free. You check this with hdsentinel.
Also, try to boot her laptop with a hdd/ssd that is working properly.
Click to expand...
Click to collapse
I tried looking for a hard drive adapter, i didnt want to put the hdd into my computer as i read it could crash it as the drivers are for a different computer, but if it works without harm ill do it, also finding an adapter here isnt easy, as i live in mexico and BestBuy is 2 hours away

SmokeyTech1 said:
I tried looking for a hard drive adapter, i didnt want to put the hdd into my computer as i read it could crash it as the drivers are for a different computer, but if it works without harm ill do it, also finding an adapter here isnt easy, as i live in mexico and BestBuy is 2 hours away
Click to expand...
Click to collapse
Hm, I don't think that plugging the hdd will crash your computer, but still, it's just a crash, unplug-restart and it's gone.
However, since I haven't been in a similar situation, you can try to plug it in a computer that runs any OS but windows, e.g. a linux pc, since win drivers won't affect a different OS.
Yet, I think it's obvious that if you plug it in your pc, you won't select it as a boot drive.

Something interesting?

So after flashing the new lollipop update I found myself stuck in a bootloop unable to get into the android operating system at all. I used flashboot and the intel flash tool to try and restore to an older ROM. It forze at 91% with an "error:unable to mount /data" I then used the root tool to try and sideload and install the update.zip from adb shell. No luck. When I rebooted I got to a strange efi menu. Looked around, and it gives me the option to install with with windows?
Anyone have any ideas. I'm waiting for radio shack to open, its the only local place that sells USB otg cables locally.

Here are the photos

njking25 said:
Here are the photos
Click to expand...
Click to collapse
njking25 said:
So after flashing the new lollipop update I found myself stuck in a bootloop unable to get into the android operating system at all. I used flashboot and the intel flash tool to try and restore to an older ROM. It forze at 91% with an "error:unable to mount /data" I then used the root tool to try and sideload and install the update.zip from adb shell. No luck. When I rebooted I got to a strange efi menu. Looked around, and it gives me the option to install with with windows?
Anyone have any ideas. I'm waiting for radio shack to open, its the only local place that sells USB otg cables locally.
Click to expand...
Click to collapse
That is something interesting. It is asking which os to boot to, not install.
I'd like to know how you got into the bios? I am looking for a way to install Linux....
Sent from my YOGA Tablet 2-1050F using Tapatalk

njking25 said:
Here are the photos
Click to expand...
Click to collapse
Did you get this figured out?

I can see "fast boot" enabled. Have You tried to switch it off? any other menu is displayed?
Have You tried to "power+vol down" on it?

I've tried a few ways to get into the BIOS shown... all failed.
Maybe the only way to trigger the BIOS to show is to fully wipe/format the internal storage so the BIOS can't pick up droidboot or anything else. Quite risky though if it isn't the way.
I'm in no way telling anyone to do this and I have not tried it myself. I'd be curious to hear from any advanced users if they have ever completely wiped the internal memory and what options would be available to restore if things did go wrong.

zach181 said:
I've tried a few ways to get into the BIOS shown... all failed.
Maybe the only way to trigger the BIOS to show is to fully wipe/format the internal storage so the BIOS can't pick up droidboot or anything else. Quite risky though if it isn't the way.
I'm in no way telling anyone to do this and I have not tried it myself. I'd be curious to hear from any advanced users if they have ever completely wiped the internal memory and what options would be available to restore if things did go wrong.
Click to expand...
Click to collapse
This guy seems to have stumbled on it also. I flashed the stock kk firmware and I am trying to do it but can't get Lollipop update to work. But it won't boot after it fails so I am reflashing KK again.
http://forum.xda-developers.com/showpost.php?p=60490907&postcount=578

Thanks for the link workdowg,
I'm still trying to work out how they did it. Could do with a step by step and whatever files needed uploaded and linked to. Also the bit about not using windows startup programs.

zach181 said:
Thanks for the link workdowg,
I'm still trying to work out how they did it. Could do with a step by step and whatever files needed uploaded and linked to. Also the bit about not using windows startup programs.
Click to expand...
Click to collapse
If you try it do let me know. I need to get into the bios to get started on a dual boot to Linux on this bad boy...

I will let you know.
I just asked for the OP to clarify a few things before I go ahead. I may try Linux first with Windows 8/10 being the final install.

So... conclusion. we have to damage firmware to boot efi...
If we could swap img file before upload to tab (during this 25 second wait) we could make windows installation possible. Am i right?

zach181 said:
I will let you know.
I just asked for the OP to clarify a few things before I go ahead. I may try Linux first with Windows 8/10 being the final install.
Click to expand...
Click to collapse
@social-design-concepts suggested we should try to change the boot order using efibootmgr. I've been communicating with him. Here is the post in the Venue thread... http://forum.xda-developers.com/show...postcount=2083

Links giving 404

zach181 said:
Links giving 404
Click to expand...
Click to collapse
here it is again... http://forum.xda-developers.com/showpost.php?p=61108700&postcount=2083 it got truncated.

Thanks workdowg.
It seems it's not as clear cut as first thought. Mind you, I didn't expect it to be. I did try a HP keyboard with OTG in Android and that got picked up ok (No lights on keyboard)
I'm a bit in the same mind as Social-Design. I'd rather have a definite way to restore Android from a totally blank internal drive before I have a go. Just up to page 214 in the thread so it may be covered later.

UEFI soft brick?
Hi guys,
I accidentely tried to use the firmware on my 1050 as described in this thread. I can indeed load the UEFI BIOS with all its settings (even though most don't do anything). But unfortunately, I cannot load any OS. I always get the error "EFI Harddrive failed" - meaning it cannot boot fomr hardrive.
I have used an externally powered USB-HUB with mouse, keyboard and USB-Stick and connected to the 1050 via OTG-cable. If the stick is bootabnle with GPT x64 then it will boot from that stick. All 64bit windows versions that I tried failed to install with "ACPI_BIOS_ERROR". 32bit windows would not start, because the GPT is 32bit and the BIOS does not recognise it.
The best success I had so far was to copy a ISO from android-x86 on the usb stick. It will boot in live-mode from the USB. Not so suprisignly, mouse and keyboard are working, touch isn't. WiFI is working and the SD card is detected. I tried to install this version of android on the harddrive which works, but it installs the EFI GRUB bootloader which is not recognised by the BIOS.
I can also access the UEFI shell.
Unfortunately, I am running a bit out of ideas of what to do in order to get a normal system (or firmware) back. ADB-drivers obviously don't work (the Intel SoC driver is installed as well), so I cannot use the Phone Flash Tool.
Any ideas would be greatly appreciated.

Yosha1 said:
Hi guys,
I accidentely tried to use the firmware on my 1050 as described in this thread. I can indeed load the UEFI BIOS with all its settings (even though most don't do anything). But unfortunately, I cannot load any OS. I always get the error "EFI Harddrive failed" - meaning it cannot boot fomr hardrive.
I have used an externally powered USB-HUB with mouse, keyboard and USB-Stick and connected to the 1050 via OTG-cable. If the stick is bootabnle with GPT x64 then it will boot from that stick. All 64bit windows versions that I tried failed to install with "ACPI_BIOS_ERROR". 32bit windows would not start, because the GPT is 32bit and the BIOS does not recognise it.
The best success I had so far was to copy a ISO from android-x86 on the usb stick. It will boot in live-mode from the USB. Not so suprisignly, mouse and keyboard are working, touch isn't. WiFI is working and the SD card is detected. I tried to install this version of android on the harddrive which works, but it installs the EFI GRUB bootloader which is not recognised by the BIOS.
I can also access the UEFI shell.
Unfortunately, I am running a bit out of ideas of what to do in order to get a normal system (or firmware) back. ADB-drivers obviously don't work (the Intel SoC driver is installed as well), so I cannot use the Phone Flash Tool.
Any ideas would be greatly appreciated.
Click to expand...
Click to collapse
You can get it to boot from USB? Get someone with to use tethered twrp and get a backup of the esp and fastboot partitions.
I have 2 things you can try if the goal is getting back to booting stock Android.

Yosha1 said:
The best success I had so far was to copy a ISO from android-x86 on the usb stick. It will boot in live-mode from the USB. Not so suprisignly, mouse and keyboard are working, touch isn't. WiFI is working and the SD card is detected. I tried to install this version of android on the harddrive which works, but it installs the EFI GRUB bootloader which is not recognised by the BIOS.
I can also access the UEFI shell.
Any ideas would be greatly appreciated.
Click to expand...
Click to collapse
Have You tried booting any x64 linux iso from flash drive?

dreamnewbie said:
Have You tried booting any x64 linux iso from flash drive?
Click to expand...
Click to collapse
Thank you for your fast reply.
I just tried that with an Ubuntu Desktop Distro. It boots up from teh USB drive, keyboard and mouse are present. Wifi, sound, touch don't work but I can see the internal Harddrive and the sdcard in the file exsplorer.

Yosha1 said:
Thank you for your fast reply.
I just tried that with an Ubuntu Desktop Distro. It boots up from teh USB drive, keyboard and mouse are present. Wifi, sound, touch don't work but I can see the internal Harddrive and the sdcard in the file exsplorer.
Click to expand...
Click to collapse
extract and dd this to a usb drive and see if it is able to boot it View attachment 3415895 if it successfully boots replace the fastboot.img thats on the thumbrive with one for your devices and see if it boots. if your fastboot.img is named droidboot.img rename it to fastboot.img.
If you can successfully get your devices droidboot/fastboot.img to load you can then disconnect the usb-otg cable and reconnect it to your PC and use the phone flash tools to restore your device completely.

Unable to install widows on new pc build

Hey guys,
I build a new pc, first new build in 20 years.
I’m using an ASUs tug gaming x670e plus WiFi motherboard with and 7800x3d cpu.
I’m stuck with the windows installation from usb.
First attempt I used a SanDisk 8gb stick and windows media creator. That’s right load, but looking back that was probably because of bios settings.
second attempt I used a leef 16gb stick. Art the verify stage at 99% it failed.
Third attempt save stick same method created the usb successfully. Had to pay around a lot with bios settings to get the stick seen as bootable. But during the windows installation it reported a file inaccessible or missing. Soo I put the stick in another machine to check but the file in question was there.
Soo I tried again, but now it cannot start up from the usb stick.
I’m in progress of creating an iso usb using the 8gb SanDisk drive, but I think I’m missing something significant.
I’ve attached my bios settings for booting.
If anyone can give some clarification, that would be greatly appreciated! If I can’t die this tonight I’ll bring it in a shop this weekend (just for a windows installation, sigh)

This... happy hunting.
Make a cloned copy of the disk once loaded and configured but before adding data, antivirus or trashware with Acronis to a spare hdd for easy OS restore.
*Redundantly backup critical data, first*
Separate data drives + OS drive are best plus the backup drives that are physically and electronically isolated from each other and the PC.

Managed to get an install.
Had to change a few bios settings (apparently one of the videos I watched for the right bios settings was the exact opposite of what was needed). Agassi used an iso stick.
That seemed to do the trick.

Thanks for the suggestions. It’s much appreciated.
I managed to get things installed. My issues were a combination of bad luck with my usb drives (and how the bootable stick was generated), as well as some poor advice on YouTube that told me the opposite of what was needed.
I also had problems obtaining an activation key legally, but that got resolved as well, so I finally managed to get my pc up and running.
Thanks again for the suggestions!