3.3V problem Mobo or PSU?

L

limey

Geek Trainee
Hey

I have a low voltage warning on my computer (new build).
On boot I have h/w error from bios, go into bios the 3.3v is running at 2.48v. Obviously this is a problem. Could it be the motherboard or the psu? Please help!

system:
case: Raidmax with rx-450k psu (raidmax psu)
motherboard: asus p5n-e sli
cpu: e6600 no overclocking (yet)
hsf: standard
ram: ocz dr2-800 platinum 2gb
gfx: evga 7900gs
hdd: maxtor 300gb sata-300
optical: dvd burner


Oh, this error wasnt there at first it happeneed about 2 - 3 days after the build. Over the last 2 days the error went away for about 6 hours. System seemed stable but has had the occasional BSoD.

Thx

Limey
 
While you'll want to test the rails with a multimeter to verify, power issues are typically with the power supply. There is an accepted tolerance of 5% in either direction for a rail.

The other thing that you would want to look into is the RAM. A bad PSU can cause trouble, but a bad stick can also give you grief. Get a hold of Memtest86 for CD or floppy and run it for 3-8 hours...it might be ideal to run it while you'r asleep. If you get any errors you may have a bad stick.
 
Well I made a bootcd with memtest and over an 8 hr period it fdailed 4 timews. I'm going to return it and buy a multimeter when im there to test the psu. thc again for your help.


L
 
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