Psu or motherboard problem?

bulletcatcher · 13 Sep 2007 at 09:57

When I turn my computer on, it start to power up for a couple of seconds then turn itself off for 5 seconds and then power on as normal. I built the computer myself and when I first installed everything it all worked well. This only started to happen after about a week of use. It does not cause a problem but I am worried that it is a sign that something is not right. I can`t tell if it is something to do with the psu or the motherboard. I have a coolermaster real power rs 850 esba and an asus pk5 deluxe. If anyone can help please.

Teaf · 13 Sep 2007 at 10:09

This is a BIOS fail-safe feature, if it can't power up from the settings given in the BIOS, it turns off then back on with more dumbed down options. I would try either reseting the CMOS, or going into the BIOS and loading up the fail-safe / default factory settings and try again.

bulletcatcher · 13 Sep 2007 at 10:12

Ok thanks I will give it a try.

BurntCarcus · 13 Sep 2007 at 11:11

Have the same problem m8, everything works fine though once it boots up too. Weird. Ill wait to see if you managed to sort it out by doing what flibby says lol

Kalpsn2000 · 13 Sep 2007 at 13:38

The same happens to mine, was worried the first time it happened!

As long as it don't harm the system I guess I can live with it.

mattyrigby00 · 13 Sep 2007 at 16:04

its normal

Smit · 13 Sep 2007 at 20:28

Sorry to hijack the thread but I have a similar problem where I'm not sure if it was a PSU or Motherboard problem or both.

Basically I hadn't turned on my PC for around 6 weeks and then when I turned it on, it booted up fine for around 10 minutes then shut itself down (Straight off, not a windows shutdown/error). Then when I pressed the power button... Nothing! not even any fan movement or anything at all. Unplugged everything and plugged everything back in again and still nothing!

I have replaced the PSU and still nothing happens and so I hope it's not the PSU that is the problem. Could something on the motherboard have fried and hence the power button does nothing?

rulocal · 14 Sep 2007 at 12:58

I would be interested in this as I am having a silimilair porblem, albeit with completely different hardware.

http://forums.overclockers.co.uk/showthread.php?t=17778956

bulletcatcher · 14 Sep 2007 at 15:56

Did the reset thing and it seems to have worked, but had the fright of my life when I turned it on again and it said no operating system found. I had to go back in and put it back to raid. I have just set the dram to 1066 again and see if that affects it. I`m a bit ****** off that having bought a new reclusa keyboard that it is not detected on start up, so I have to swap boards when I want to enter bios.