Question PC permanently won't start after sleeping

May 3, 2020
Last night I slept my PC as per usual, and tried to start it the next morning, but pressing the power button had no effect. Pressing on the keyboard lit up the RGB keys but the computer had no response. The power button LED was still flashing at this time (indicating computer was asleep). Tried holding power button for >10s, re-plugging PSU, re-plugging pwrbtn onto motherboard, re-plugging RAM sticks and GPU, reinserting CMOS battery, using screwdriver method to start pc but nothing has worked. Motherboard LEDs light up when PSU switch is turned on. Very confused as to what may have caused this as I have not touched any plugs or anything. Would appreciate any insight or help guys.

Motherboard: Asus B450 Prime
CPU: Ryzen 3600
GPU: Rx 5700XT
RAM: G.SKILL Ripjaws V 3200Mhz 2 x 8GB CL16 1.35v
PSU: Cooler Master V 650W 80Plus Gold
Storage: Crucial P1 1TB
Case: NZXT H510