cannot connect to pc at all - Samsung Galaxy S7 Edge Questions and Answers

hello I'm really hoping somebody can help me because I'm not getting answers anywhere I've halfway through a course to learn mobile tech repairs and I'm completely stuck on a Samsung SM g925a when trying to remove the FRP. I have written my class instructors and I'm not getting any response. I've downloaded all the drivers from Samsung I've updated them all but however it is not allowing me to connect the device to my PC so I can get it into odin to flash combination files. When I plug the device in to my windows 10 pc I receive a pop up saying the last USB device you connected to this computer malfunctioned and windows does not recognize it and then in device manager when I open it it shows as unknown USB device device descriptor request failed. I tried to download the drivers again reinstalled and updated them and that didn't work. I changed all my cords tried it on every Cord I had and it didn't work, yet these cords recognized other devices I had. I also uninstalled the USB driver and then I ran the hardware troubleshooter still got nothing and then I also disabled fast startup none of this has worked. I also have spent countless hours researching on line and I'm just not getting any answers and I get the same troubleshooting ideas I've already tried however I did come across a program USB debugger r but I don't know if I had just downloaded it wrong or had the wrong firmware files but it wasn't working for me I thought maybe that would help me to connect to PC. I'm still learning and only halfway through the course but it seems like this is such an easy issue that I just can't seem to figure out is there anybody out there willing to help me figure this out please I'm sure something simple Im missing or forgetting but I've been dedicated to this phone and I sure can't figure it out it's stopping me right at the gate. Thanks in advance

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[Q] Brick Not Recognized

Forgive if this is somewhere else on the forum but i have been filtering so much info in the last day and this doesn't seem to be anwsered.
Ok so I went to flash with odin 1.3v and the flash was a bad one probably user error. After that failed rebooted phone and comp. now The computer doesn't recognized the phone as any real hard where just an unknown device. i have reinstalled the drivers multiple times. i have got the watermark suite so i can use the driver but since i cant find a .inf driver i cant force install it. I Understand that it is a bootloader issue or so i seem to believe please help with a redirect to answer or just tell me why i FAIL.
come on nobody unknown device drivers are installed used all usb ports give me some help

Samsung vibrant usb problem...genius help need :(

Hello Guys...GretoVerno here fellow Samsung Galaxy S Vibrant Owner...
I have this phone and everytime i connect it to usb i Get the Message
"USB Device Not Recognized" error message...I have installed all the drivers i could possible find on the internet and the error still pops up...i ahve tried using the phone in USB Debugging mode to no avail what so ever...
Someone Please help if there's a genius out there...I really love this phone
Uninstall the Samsung drivers off your computer. Then reinstall make sure that have the correct version windows 32 bit or 64 bit for the correct operating format. Make sure you give admin rights to it. you can find these drivers in the Noob bible by S15274N in the Gen section. I am assuming there is not a problem with your phone. If you have a friend, check it on their computer, that's an easy way to rule out phone issues. That should resolve what ever problem you have.
There ia another way to check, that is have a friend with odin (or you) and see if Odin recognizes, if it does, then you got it solved or at the very least Odin back to stock and reinstall a new rom, this will solve all these issues as well.
Hope you get it, good luck
Had an issue with my brother in laws comp not recognizing his vibrant. Took an hour or two to get his phone recognized. I think we ended up using the drivers from pdanet instead of the official danny drivers. First try getting your phone to work on another comp. Will help narrow down the issue by 50%
Sent from my SGH-T959 using XDA App
Windows cannot recognize my vibrant!
Hopefully someone can help me out as I am having the
same problem with my computer not recognizing my phone.
The thing is that I am already running Froyo stock 2.2
and at the time I was able to update it to 2.2 my
computer recognized my phone without a problem. I have
been reading the forums for a while now and the only
time anyone had this problem was when they first bought
the phone when it was released but here is my problem.
After updating Kies mini and installing the official
Samsung drivers from the Samsung website I plug in the
phone and i get the error that windows does not
recognize the device. I have tried this on Windows Xp
and Windows 7 on 2 different laptops and got the same
error everytime. So what I did was while on Windows Xp I
uninstalled the unknown driver and I kept plugging and
unplugging the phone and uninstalling the unknown driver
until I got my computer to finally recognize my phone.
Once my computer recognized my phone I Then started
downloading the recent update, when the download was
done as soon as my phone went into download mode my
computer kicked out my phone and gave me the error that
windows does not recognize the device and at that time
Kies mini gave me the emergency recovery notice which I
didnt have to use because the phone booted fine without
fail.
You should also know that prior to the recent
update from tmobile for minor bug fixes I tried to root
my vibrant using the superoneclick root program. Upon
doing this after fighting with my vibrant and my laptop
to communicate with each other my computer recognized
the phone and I attempted to root. Then I got the
looping message and at that time windows did not
recognize my device which then messed up my modem and I
had to do a system restore. So after weeks of fustration
trying to root and now not able to downlaod the recent
update I am now asking for your help as XDA has been
there for us all. I have tried samsung drivers, kies mini
drivers and pdanet drivers and get the same windows
doesn't recognize my device everytime. Does anyone have
any ideas as what I can do to get my computer to
recognize my phone as I can not do anything until my
computer and my vibrant get along. Your help is greatly
appreciated XDA thanks for all that you do!
do you guys have Samsung kies installd??
Sent from my SGH-T959 using XDA App
I do and its been updated for the new update for thee recent bug fixes.
can you try a different USB chord?
Sent from my SGH-T959 using XDA App
You know that's the only thing that I haven't tried should I pick one up from T-Mobile or were should I get one?
I am getting the same error and i tried a buddy's cord and it still did the same thing. Not really sure what happened. My phone was working fine just a few days ago. I am wondering if it has anything to do with the large amount of Windows Updates that just happened.
Try uninstalling your drivers and install these. I had the same problem and then I used this and it has worked on every computer. Heck even worked when I hooked up my SGS2
http://www.multiupload.com/FUL878MTJH
I had the same issue. It is a phone problem and I had to get a warranty replacement. No combo of cables or drivers would fix mine.
Well after uninstalling and reinstalling, trying new drivers, restarting countless number of times, troubleshooting through the device manager, I had the genius idea to restart my phone in a last ditch effort before i gave up and it worked.
Now i feel somewhat like a dodo. Rule #1 - Restart
GretoVerno said:
Hello Guys...GretoVerno here fellow Samsung Galaxy S Vibrant Owner...
I have this phone and everytime i connect it to usb i Get the Message
"USB Device Not Recognized" error message...I have installed all the drivers i could possible find on the internet and the error still pops up...i ahve tried using the phone in USB Debugging mode to no avail what so ever...
Someone Please help if there's a genius out there...I really love this phone
Click to expand...
Click to collapse
Have you rebooted since you installed the drivers?
Well I tried those drivers from that link you provided and no dice. Im going to pick up a new usb cord from Tmobile tomorrow and see if that might be the problem. I can always use a 2nd cord for charging I guess.
djrysk said:
Well I tried those drivers from that link you provided and no dice. Im going to pick up a new usb cord from Tmobile tomorrow and see if that might be the problem. I can always use a 2nd cord for charging I guess.
Click to expand...
Click to collapse
That would be the logical next step.. just to verify, you have restarted the phone and computer since installing the drivers right? If you have then its most likely the cord. Its weird these cords seem to have been giving me problems more than any previously owned ones ie regular usb or even my amp cord which I step on and rip out the amp more than i'd like to admit
Sent from my SGH-T959 using XDA Premium App
Makes sure that when you uninstall your drivers to restart your PC then reinstall and give a shot. Of course, also make sure you are using the right 64x or 86x driver.
madguitarist63 said:
Try uninstalling your drivers and install these. I had the same problem and then I used this and it has worked on every computer. Heck even worked when I hooked up my SGS2
http://www.multiupload.com/FUL878MTJH
Click to expand...
Click to collapse
omg thank you! I was having the same problem! /me bows to madguitarist63 :victory:

[Q] USB Problem

Earlier i was trying to flash a custom ROM and i accidentally deleted my whole OS... My problem is that every time i plug in my device it comes out as unrecognized. I have tried installing all the drivers from Nexus Tool Kit and i still get the unrecognized notice. I've tried plugging my device on three different computers and still nothing. I've tried just about everything i could read about in the posts but nothings worked yet. If anyone could please help me with this id really appreciate it!!!

Bricked Lenovo Vibe Z2 Pro / K920

I was trying to fix a camera issue while on holiday with my phone but accidentally wiped some partitions during the rewrite of my rom my dad pulled the cable out and now my phone is totally unresponsive. If I plug it into my windows 10 laptop I get a device descriptor request failed error and I am unable to fix it. From reading an article on androidbrick I would post a link but I don't have enough posts it looks like it should show up as a com port but it does not for some reason all the drivers are installed and I have tried forcing the driver onto the device and it won't accept them. The fix I need is a way to get the com port to display so I can reflash and program the bootloader. I am still on holiday so currently have limited equipment basically the phone, usb cable and my laptop and sometimes wifi.
Any help would be appreciated a this issue is driving me crazy. :crying:
bobthemac said:
I was trying to fix a camera issue while on holiday with my phone but accidentally wiped some partitions during the rewrite of my rom my dad pulled the cable out and now my phone is totally unresponsive. If I plug it into my windows 10 laptop I get a device descriptor request failed error and I am unable to fix it. From reading an article on androidbrick I would post a link but I don't have enough posts it looks like it should show up as a com port but it does not for some reason all the drivers are installed and I have tried forcing the driver onto the device and it won't accept them. The fix I need is a way to get the com port to display so I can reflash and program the bootloader. I am still on holiday so currently have limited equipment basically the phone, usb cable and my laptop and sometimes wifi.
Any help would be appreciated a this issue is driving me crazy. :crying:
Click to expand...
Click to collapse
Sorry as this may be not much of a help to you but rather my experience with pretty much the same situation.
I couldn't turn on the phone and there were no signs of life when connecting it to a PC (only a message that USB was not recognized with the same description as you mentioned - device descriptor request...).
I tried to connect the phone on different PCs with different OSs (from XP to Windows 10), different drivers/tools, but there was always the same USB error displayed.
Eventually, I had to return it to the service center (it was under warranty) but they couldn't repair it, so luckily they sent me a new one

PC won't detect S7, all conventional fixes exhausted!!

I've got 5 S7s on my desk, all Canadian variant, all from the same manufacturer all the same model. - SM-G930W8
All are recognised by my PC but one and I can't work out why not!
Plugging the phone into the PC makes no noise from the PC but the phone seems to detect a regular charger not a PC.
I have plugged it in using different cables including the one in its box and the ones used on other devices that were recognised and only this phone doesn't work with any of them.
I have plugged in, unplugged and rebooted many times.
I have set the USB configuration to MTP (Media Transfer Protocol)/Transferring files.
USB Debugging is ON and OEM unlocking is ON.
I have tried booting into stock recovery and wiping cache AND factory resetting.
When phone is turned on "adb devices" returns nothing.
I have installed Samsung Kies and Samsung Smart Switch to reinstall the drivers.
NOTHING IS WORKING!
All threads I find tell me to do the things I have listed above and have people saying these have worked but all of them I had already tried and double tried and nothing is working.
The cables are correct and working with other S7s of the same model.
All the correct drivers are installed and have been uninstalled and reinstalled.
All the correct setting are selected and OEM unlock and USB debugging enabled.
Phone was fresh out the box as were the other four and all cables.
Samsungs apps installed on PC to ensure best drivers installed.
Would really appreciate some guidance or consolation that its not something stupid I'm doing! I work with these phones everyday and this has never happened! Just banging my head against a brick wall trying to resolve it
maybe faulty usb port, my nephew had S6 with the same issue, service replaced usb port and it started
to work with PC.
try download mode and see if odin see your phone.
try to move the cable a lil bit and see if sth appears for a second.
yaro666 said:
maybe faulty usb port, my nephew had S6 with the same issue, service replaced usb port and it started
to work with PC.
try download mode and see if odin see your phone.
try to move the cable a lil bit and see if sth appears for a second.
Click to expand...
Click to collapse
Thanks but unfortunately Odin doesn't recognise in download mode.
Could it be a USB port problem if I used the same port for the other 4 devices and have no issue?
I'm considering sending the phone back to manufacturer to be honest I think it may just be a faulty device or something!
I bet its microusb port fault
Had a similar issue on Windows 10 , if that's what your running let the phone be connected, uninstall the driver from device manager, and then install driver select have disk and select the basic mtp , if this doesn't help connect to Microsoft support and they'll guide you through it , worked for me , my phone used to detect on other laptops but mine , also I could connect other phones on mine but not my phone, hope this helps
same issue here

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