This is not a brand-new rig here. My computer has been running pretty well for the past 1.5 years, since my last major upgrade. Except that I ran into a brick wall yesterday with it. I did as much troubleshooting as I could, but I just wanted to ask my fellow geeks for their opinions before I dropped $50 on a new motherboard.
My computer gets past the bios and POST checks just fine. Once it goes to load the OS though, it eats [bleep] (technical term) and reboots. ANY attempt to boot off a HDD results in a reboot. Attempting to boot from an Ubuntu 7.10 live linux cd will also cause a reboot (weird). BUT you CAN boot off of a Backtrack2 live linux cd (weirder).
So, as far as my troubleshooting goes, I stripped down to the basics (CPU, RAM, Vid Card, Keyboard). That went fine, except there was nothing to boot from. Hooked up a CD drive - couldn't boot Ubuntu, but Backtrack worked. Disconnected the CD drive, and tried the HDDs separately - couldn't boot, computer rebooted.
Anyway, several hours of booting and rebooting, and I figured there was a small chance that this was drive related. So, I went out and bought a new hard drive (500 GB - I needed one anyway). Unfortunately, that didn't fix the problem.
I also ran a RAM test off the Ubuntu CD (ubuntu's boot menu works, you just can't boot the linux OS), and it came back clean - all my RAM is good. HDD diagnostics are clean, too.
SO, I'm thinking I have a motherboard problem, probably something with a HDD controller or something. Honestly, I've always suspected that there was a HDD problem with my motherboard (this isn't the first issue I've had with it). So I'm probably going to buy a new motherboard. Before I do that though, maybe someone sees something here that I can't, or has had this problem before and has a solution?
And of course, if anyone has any suggestions or links to socket 939 motherboards that will work with an ATI X1800 XT video card (pci express), let me know!
Thanks a million in advance! (I know it was a long read ><)
extra: almost forgot, I was running 2x raptors in raid 0 (35 gb each), which seem to hang up the bios now. even with them disconnected though, I can't boot off HDDs.