Computer Start Problem

[TheLegend27]

Hi,

I tried turning my computer on around a month ago to no avail. The motherboard was recieving power but wasn't starting, so I put it on a broken PSU (Be Quiet Pure Power 8, 600w). I just wired up my new PSU (Corsair RM750x) and am still having the same issue.

The motherboard light is green and the graphics card lights come on. Everything appears to be wired up as it should, including the power SW and HDD cabels.

Any ideas?

Cheers

 

[TheLegend27]

Tried resetting the CMOS? Basic stuff but definitely the first thing to try in such situations.

I seem to recall a faulty hard drive stopping my board from POSTing a few years back so worth disconnecting any peripherals. Do you get any hard drive activity?

What happens when you push the power button? Nothing? Does it beep? Nothing displaying on screen such as a blinking cursor with a black screen?

I get no activity whatsoever. I've tried resetting the CMOS and replacing the motherboard battery. There's no beep or anything on screen.

 

[TheLegend27]

test if the psu is working first though (there's internet guides on how to do this)
then strip down to bare bones. just psu, cpu+board and ram (+gpu if your cpu doesnt have it integrated)
if still doesnt post then its normally board (cpu less likely)

Thank you, seems like it is the board. Would the standby power light still illuminate even if the board is dead?