Question PC Won’t Work/Can’t Turn On Properly

[HelpWithPCYes]

Specs are:
Ryzen 5 3600
Radeon RX 580
MSI B450-A PRO MAX
Corsair CX550M

Ok so my pc has been running fine for a couple of months now but it suddenly won’t turn on properly. The fans are working fine same with the gpu fans but my keyboard doesn’t work and there’s no display either but when i unplug my gpu cables the keyboard turns on still no display though. What am i supposed to do for it to work again?

 

[Jacozeelie]

Ram? How old is your psu?

 

[Jacozeelie]

Barebone your pc, only cpu and one ram stick. Check if it boots up

 

[HelpWithPCYes]

2 ddr4 8 gb ram. I tried booting it up with 1 ram it still doesn’t work