Computer Start Problem

TheLegend27 · 21 Jan 2018 at 11:26

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

britain4 · 21 Jan 2018 at 12:22

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?

Delta3D · 21 Jan 2018 at 12:29

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?

TheLegend27 · 21 Jan 2018 at 12:43

britain4 said:
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?

Delta3D said:
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.

tamzzy · 21 Jan 2018 at 15:51

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)

TheLegend27 · 21 Jan 2018 at 16:21

tamzzy said:
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?

tamzzy · 21 Jan 2018 at 16:27

@TheLegend27 it can still do, depending on which circuit is affected

jwink86 · 1 Feb 2018 at 14:45

Could be an issue with the power button itself. Do you have another? Sometimes they come away from the housing inside the switch and wont make a connection when you push it.

Shoeyuk · 1 Feb 2018 at 15:31

If its the switch on the case you can normally jump the power switch by touching the two power switch pins on the motherboard with a small flathead screwdriver

Habakkuk · 13 Feb 2018 at 00:51

You can get a seperate button that plugs into your power supply to activate it - they're also useful for testing watercooling without powering the main computer.