NF7-S 2.0 rebooting probs...help!?!?

[Btthr5150]

<FONT face="verdana, arial, helvetica" size=2>I have had this happen 2 in the last week and can't fiqure it out please help!!
The first time I did the regular stuff install nvidia drivers from disk install xp and video drivers ...by the way heres my stats
XP barton 2500 (not overclocked or unlocked yet)
512 DDR Corsair (2 x 256) Cas 2
Radeon 9800 pro (not overclocked)
Antec truepower 430watts
80 gig SE WD 8 mb cache
After about 2 days of running fine the next time I fired her up she wouldn't load into windows and would re-boot the pc and do this in a eternal loop.
So after i read in here about probs with the serial ata drivers and bios issues I decided to just re-install XP (home) and flash the bios and only load fresh latest drivers for the mobo and video card etc,.
Now it ran fine for about 2 more days and then started re-booting itself again (just like before) in a eternal loop again!!!!!!!!!!
What the F**k!!
Please help with any suggestion??

<FONT face="verdana, arial, helvetica" size=2>By the way I have already re-seated mem (which is in slot 2 and 3) swapped out the serial adapter thingy with new one changed voltages to CPU up .025 to see if she wasn't getting enough juice, and played with swaping out the battery to see if it was bad ......but still to no avail!!!</FONT></FONT>

 

[Btthr5150]

bump

 

[m305]

maybe you should raise the vcore voltage a little bit that may be the reason its not stable and do some test like prime95 for your cpu, mem-86 for memory, 3dmarks for video

 

[beatle]

Definitely a good idea to run checks on your memory (www.memtest86.com) and harddrive (download wd's diagnostic util from their site). It could be a number of things. You do have a good PSU, but it could still not be perfect. No brand is invincible. I had a problem on a dual p3-550 system where the voltage regulators on the motherboard weren't up to snuff and the machine would lock if you put a slight load on it (like the system check windows NT does.) You shouldn't have to overvolt the CPU, but give it a little boost in voltage and see if it helps.