PC won't start SOMETIMES

[Wotan]

[sorry for my bad english]

I just bought a new PC and have the following problem:

When I press the power switch, the system (lights, fans, dvd) turns on for about 5 seconds and then turns off again. During this 5 seconds the monitor doesn't even power on, it remains in standby. After this happens, I'm not able to power on the PC again without re-plugging the PSU cable before. I unplug the cable, wait for the MB light to turn off, plug it back in, and (lol) without touching anything the power turns on by himself and turns off after 5 seconds. And now I try to turn it on by myself pressing the switch and.......

A) the system starts up without any problem and keeps working normally during the whole day :D

OR

B) it turns off after 5 seconds (same story again) :mad:

Sometimes A happens, sometimes B. What is going on here?

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PC specs:

CPU: Intel Core 2 Duo E6600
MB: Asus P5W DH Deluxe
RAM: Kingston 2 GB DDR2 533MHz
GPU: Gigabyte 7600GT
PSU: Antec NeoHE 500W

 

[Addis]

Sounds as if your power supply is failing, take a look inside your case. What brand/model is it?

 

[donkey42]

PSU: Antec NeoHE 500W

Sounds as if your power supply is failing, take a look inside your case. What brand/model is it?

you've started doing my trick Addis, scim reading is what i do best

 

[Addis]

Ah yes...skim reading is my downfall too. I tend to ignore anything subconsciously with a line/dash as its usually a sig.

Anyway, it seems as if the PSU should be good quality. I'd run [google]memtest86[/google] for about an hour or so to check for RAM errors.

 

[donkey42]

Ah yes...skim reading is my downfall too.

don't worry about it, i've tried not "skim reading" and i just can't do it:doh: , just glad i'm not the only one, but then again, thats what everyone else is here for