New PSU but didnt change my 5v rail (???)

[BJOkarma]

Been having a problem with random shutdowns as seen in this thread: http://www.xtremesystems.org/forums/...threadid=38901 so I bought a new PSU (fortron 530) installed it but it hasnt changed my rails at all!?! I used two monitoring programs (mbm and pc wizard 2004...i dont have a multimeter) and both report the same rails seen in the previous post. But I have noticed some improvements:

1. I was able to overvolt the CPU past 1.55v without it shutting down.
2. I was able to overclock another 100mhz (and maybe more...I just wannted to see if it would go farther.....I think it will go past 2.6ghz)
3. Was stable runnin prime for a few minutes (gonna run it longer in a bit).

BUT:

1. Now when I run a game or loop 3dmark instead of randomly shutting down it randomly resets.
2. Those monitors still report bad rails.

What could this be? And how do you change the rails through the Fortron...I thought someone said that it was adjustable.....Oh, and please read the thread I posted earlier so all this makes sense.

Thanx again for all your guy's help!

[Fried_Spam]

I think you have to remove the outer skin of that PSU to adjust the rails via the internal pots. I know there are some threads about it here somewhere with some pics that should help you.

[STEvil]

1: Turn everything back to defaults. Volts, clocks, everything!

2: Do not overclock the video card during any trouble shooting.

3: The monitors are not reading correctly, dont worry about them.


OT - Nice avatar

[BJOkarma]

Fried_Spam - Thanx for the reminder; should have looked b4 posting that question.

STEvil -
1. Do you think then that I dont need to manually adjust the PSU's rails or pots or whatever they are called?

2. In the trouble shooting process, what exactly should I be looking for (aside from it not randomly shutting down). In other words: what should i start with?

3. Glad u like the avatar - just randomly found the pic and I knew it had to go up.

[STEvil]

No, you should never adjust them unless you have a multimeter and know how to use it. What the board reads and what they actually can vary quite a bit.


Start with everything at stock, running memtest86 (bootable cd version) for 24 hours is a good idea, then 12 hours straight on test 5. Prime 95 on the CPU after that for 12 hours minimum with below settings is also a good idea.

If neither of those works, grab a spare video card and try it instead.

[STEvil]

woops.. forgot to inlcude pic

You can get the latest version from http://www.mersenne.org

[BJOkarma]

Great thanx alot! Will post report when complete.

[BJOkarma]

I've been narrowing things down but i have a question that will help me narrow things down even more:

Is it possible that my random shutdowns be caused by my RAM overheating?

[STEvil]

Sorry for the late reply..

Yes, if they are reaching ~70c+

[BJOkarma]

Yup; i think that is what my problem was; they were HOT; couldn't even touch them. Sinse i brought the ram back down to stock voltage I dont have the shutdowns anymore and it is still stable. Still runnin stability tests and all have been clear of random shutdowns! WONDERFUL!

Everything is back on track! Thanks a lot Stevil.

Interesting to note: The K8NNXP nforce150's DSP unit is a POS. That was the item that was causing my computer to crash if I overvolted it over 1.55v. ANyone else have this problem? (So, I pulled it out and all is well!)

Thank you all for all your help! You guys make this forum really shine!

[STEvil]

Hot ram bad. Cool it!