Computer dead

[frags]

My computer has decided it doesn't want to power up no more. It just keeps restarting when it's booting, at diffrent stages. Not getting any beeps off the mobo. I tried removing ram, hdd, graphics and disk drives to see if it would stay powered up but nothing has worked.

Sooooooooo. I think it's the power supply, anyone got any ideas on this one?

Cheers
Frags

[red_ned]

sounds most likely to be power rather than anything else otherwise you would hear beeps

[Thaldarin]

I wouldn't always say that.

For example, the downstairs PC doesn't always power on at the moment because the motherboard is going up shit creek... it has difficulty finding the USB Controllers and then hangs while launching, I also had a CPU that was on it's way out once that did the exact same thing, ... so diagnose further.

Can you get in to the BIOS? If so, check the temps after 10 mins on your motherboard & CPU.
Make sure your GPU fan is running and/or if any extra connectors for power are needed they are plugged in, this can cause the same sort of thing.
RAM Test your RAM.
Secondly, how old/new is your hard drive? Do you have a second rig you can put it in to and do a diagnostic on? Also, good idea to make sure SMART is enabled in the BIOS, this could tell you on a reboot if there is any obvious problems with your HD.

The very last thing you should do is test your power supply, if it is gone it is normally gone or you can hear it dying. Put your hand at the back, is it spewing out hot air? You normally only get "non-hot air" if you've got all your fans set the wrong way on your case, this could lead to it being a different problem. If you get warm air, you're fine, if you get really hot air, you've probably got a problem sitting idle in your BIOS. Test it with a voltmeter/ampmeter/all-in-one-tool thingy. Making sure the voltage is correct while in BIOS, as is the amps and watts (ie. my idle PC Power is 173 Watts @ 0.74a @ 242.9v - yours may vary but still shall be sort of similar, I'd be worried if your Voltage was way off ).

The reason you won't hear beeps is because some motherboards are dependent on you installing the speaker on the board, which 99% of the time I forget to do for boards that don't have one in-built D=

[frags]

When I say it has no beeps, it just has one beep like all is ok, I cant get into bios it just restarts after about 3 seconds, now and then it stays a little longer but not enough to mess about in bios. I have tried another GPU in it, reset the processor with new thermal paste and took out the memory and tried each stick on its own. I also have 2 hdd's both about 2 and a half years old. Wont power up but will boot the couple of times it has stayed on for more than a few seconds windows starts to load.

I tried another PSU from a old system of my friends but my mobo has 24 pin connector, this only had 20 and was only 250w, did the same thing. My psu would not work at all in the other PC. I might just order a new mobo/cpu/memory bundle and a PSU, due an upgrade anyhow (dont tell the missus)

[frags]

So.... just ordered this https://www.overclockers.co.uk/showprod ... -OE&tool=3 and a new PSU so if that doesn't fix it then I'm in trouble from the missus hehe

[red_ned]