a3 2015 unable to start - Galaxy A3, A5, A7, A8, A9 Q&A, Help & Troubleshoot

about an hour ago my a3 (a300fu 2015 edition) suddenly turned off and is unable to start since. i have left it charging since and the screen wont come on, no vibration, unable to get into recovery. it recognises it in odin on the laptop. the battery was on 1% when this happened. it was rooted and everything else was left untouched apart from a few bloatware system apps froze (had been froze weeks ago). can anyone give me an idea to get this phone working as i need it working tomorrow hopefully? there was no updates done since i got this and odin was only used once to flash the root file (weeks ago). can anyone give me a bit of advice on how to fix this?

Make sure you get some charge in it.
Hold POWER + VOL DOWN until it reboots.

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