Computer suddenly unstable

[manic111]

Hi. My PC struggled to boot properly yesterday (wasnt getting the single bleep at post, restarted itself once). Then I plugged in my friend's MP3 player to give her a couple of songs and it restarted itself-no blue screen, just turned itself off and back on. This morning it again didnt boot once. I bumped up the Northbridge voltage 0.1 and the RAM voltage 0.1. It gave me the single bleep at boot and loaded Windows fine. I ran Memtest and got no errors, and am an hour prime stable and counting.

When this has happened before it was because of my unreliable (Ballistix) RAM, but memtest doesnt think this is a problem this time.

Any ideas?

I am running an E4500, 3GB PC5300 Ballistix RAM, a P35C-DS3R and an X1950Pro, all at stock, RAM at 2.1v, 3-3-3-12.

Has bumping the voltages improved my stability? Even if I am fine now, does anyone have any idea what caused this? It had been rock solid since I last RMAd my RAM about a month ago.

 

[mp260767]

checked ocuk and they have the ram voltage as 2.2 for the 5300 ballistix.

 

[manic111]

Yea, I know, but apparently there is a problem with the P35C-DS3R boards putting an extra .1v through your RAM at random, which would probably explain why I have had to RMA it so many times-as long as I am not overclocking it should be fine at 2.1v, particularly as when I had 2GB in there it ran fine at 1.8v. Plus it has run without any issues for a month prior to this at 2v.