Possibly PSU problem

ColinY12 · 28 Feb 2012 at 11:07

Hi,

I have a workstation that is failing. When I switch it on it powers up for about 7 seconds and then powers off again. My intial thought was that its the PSU. I have tried swapping PSU's and the machine powers up but there is a black screen.

It is really confusing, on the original PSU i used a paper clip to test the PSU and it powers on fine and does not switch itself off.

Could somebody help me?

Thanks,

Colin

OptimaLnrg · 28 Feb 2012 at 11:43

Strip the system down to bare essential components. 1 boot drive, onboard graphics, 1 stick of ram (try both as may be faulty). Gradually add to find the culprit.

Also check the cpu cooler is seated properly, could be overheating cpu.

HecFam · 28 Feb 2012 at 12:22

Could be a problem with this bios, booting graphics from Pci for example, try resetting the CMOS, you should be able to find it by looking in your motherboard's manual.

ColinY12 · 28 Feb 2012 at 14:17

Thanks for the advice, I managed to get the machine powering on ok and not turning off, i think the CPU was getting too hot. However now nothing displays on the screen and the keyboard is also flashing on and off. Would it therefore be to do with the graphics card or possibly the motherboard?