Constant restarts?

[beltz02]

Cube Parts (all new)
Aspire X-Qpack - Clear Windows & 420W Blk/Blue (case) / custom 420 Watt Power Supply

Mach Speed Matrix P4M800 Socket 478 Motherboard

Intel Celeron 340 2.93Ghz 533FSB Socket 478

Ultra 256MB PC2100 DDR 266MHz

pqi POWER Series 512MB 184-Pin DDR SDRAM Unbuffered DDR 266 (PC 2100) System Memory

DIAMOND Stealth S85AGP Radeon 9250 128MB DDR AGP 4X/8X Video Card

Problem 1.

When I first put it together I could power on the machine but nothing would show on the monitor. The monitor was in working order. After placing the processor into a 2nd computer that confirmed that it wasn’t the problem. I replaced the mother board with this mach speed one. All the problems were solved.

Problem 2.

This is where it gets tricky; a few days ago my computer was just restarting on its own when I wasn’t doing anything and sometimes when I was. I went into my computer  properties  unchecked the restart option on error

Its running at 29-30 degrees C which is 86 degrees. The shut off is 140 degrees Fahrenheit

Anyone have any ideas at how to stop this, or what the cause may be?

Thanks in advance

[beltz02]

someone here said that it might be my registry on windows that was acting screwy.

I totally reformatted my hard drive and installed it fresh. Once I had everything installed I poped in a USB flash drive so that I could install AVG antispyware on the computer. This instantly caused it to restart and since then its been doing the random restarts again

[beltz02]

Another person said that it might be a conflict with my RAM. I tried them each individually with the same result as when their both together....anyone have any other sudgestions?

[guestolo]

After the fresh install, did you update motherboard drivers?
Is it time for a bios update?
The errors started after you updated the video drivers?
Are they compatible
Try going into device manager and roll back video drivers
Still the same error messages?

[beltz02]

something strange happened a bit ago. I disabled the onboard soundcard and it stopped rebooting ...for about 45 minutes. Then it just got in the kick of rebooting again and again

and to answer, I can't get the bios or anything updated because it reboots so often

[beltz02]

is this sounding more like a motherboard problem? I'm really not wanting to spend more money but you have to do what you have to do.

Any other input?

[guestolo]

Without updating to the latest bios
This appears to be info on your motherboard
http://www.tigerdirect.com/applications/Se...p?EdpNo=1644615
your right, it may be hardware related, but after the fresh install
Before you installed video drives and such
Did you update the via chipset drivers?
http://www.viaarena.com/default.aspx?PageID=5&ArticleID=446

I went into my computer  properties  unchecked the restart option on error

Do you get a BSOD, any exact error messages