XP freezing when idle

[replacementgod]

Here we go.

I have an Athlon 1200.
256 MB Crucial Ram.
Asus 32 MB Geforce 2
Antec 300 watt case
MSI k7t pro 2a motherboard
soundblaster 512 sound
new 40 GB IBM Deskstar drive

I had ME on this thing, and it never froze up on me. Wiped drive-- new format. Load XP. Found drivers for everything on its own. Immediately began freezing up. The machine will not freeze on me ever if I am working on it. If I leave it Idle, I can come back in 10-60 minutes and it will have frozen up. I tried:

Reloading XP again.
Finding every alternative driver I could for all of my components.
Turning off screensavers.
Turning off ACPI.
Making it a standard computer instead of ACPI.
I was working w\ XP's Via drivers, and went to 4.37-- no change.
I believe this started even before adding on any extra software, but I uninstalled EZcd creator and NAV 2002.

I could add more to the list if I thought about it a while. Any suggestions on things to try would be appreciated.

One note: there is nothing on this computer that I know of that should be kicking in when it goes idle, but go ahead and toss out any thoughts. Thanks

[Hpro]

There is only two things you need to do In the power management disable Hard drive power down and also system power down..
This you can do here - Right click on the desktop select properties select Screen Saver select Power... and there set
Turn off monitor = up to you
Turn off hard disks = NEVER
System Standby = NEVER
Hybernates = Up to you
This will cure it

[replacementgod]

Actually no. That I also tried-- and doublechecked. Still locks.

SOme more info--- I ran the machine with 128 MB memory, using each chip solo to rule out the memory. Freexes with either. I also noticed that if I start media player and stick in a cd, and put it on continual play, the machin erarely locks up. Maybe every 5 hours or so of idle on average to freeze, vs 10-60 min average if the machine sits there with nothing to do.

All suggestions are appresiated, keep them coming.

[jeresimo]

There are two possibilities I see here:
l. Check your Power Supply. If you got an extra one try it.
2. Check your Electical Outlet and any Surge Protextor you have connected with you PC. I once experience lock ups like that snd after long tweakings, I find out that my AC Outlet was kinda not giving the right current. Hope this helps.