Where to start?

I also have had this problem since assembling my first machine a few weeks ago....

XP Pro Service pack 1
Intel 2.5 Ghz
Soyo 845pe Lite motherboard
1 512 stick of RAM and 1 256
Western Digital Caviar 80GB HDD
425 Watt power supply
Nvidia GeForce FX 5600 (AGP)
Sony DVD RW
wacom tablet (my only usb device)
and also a cable modem running through a belkin router

...and when it runs, it runs great. Problem is (seemingly) random reboots. I've been researching my problem using the error codes and dumpchk data and the only thing I've found is small comfort that I'm not alone with this problem. Many threads citing the same errors, curiously most of them seem to be about 1-2 years old. This is the most recent thread I've found, so I registered and am posting.

Let me take a moment to say that I don't have as many "ComputerSmart Points" as others that I see posting, but I'm capable enough, and am always eager to learn whatever I need to to solve a problem.

In all the threads I've read, no one has come to a definitive solution.

This is the best thread I've read so far
http://forums.viaarena.com/messagev...arc&STARTPAGE=1

A lot of people talk about RAM, but when it's changed the problems persist. I've run it with either and both of my sticks and still gotten the BSODS. Haven't run a memtest yet, though. Other people talk about IRQ assignments, and I think that's a possibility. ONly this morning have I started looking into reassigning my IRQs (my USB and VidCard share IRQ 16. IRQ 11 is empty, see this thread: http://www.annoyances.org/exec/forum/winxp/1005541276)

I've checked my voltages, flashed the bios, upgraded to SP1 (the first time it rebooted during the install, -curses!- and I had to reinstall from scratch). I've messed around in BIOS some, but not every corner.

At post I get a message flash by that tells me "no 80 pin conductor cable installed"...which is strange because I'm able to read/write to the HDD no problem (until BSOD, which happens if the machine is idle or busy). Replaced the cable, replugged it, everything, so I'm just going to ignore that problem, because if the cable isn't installed then how could it be working with the HDD, right? I know the diff. between a 40 pin and 80 pin, so I'm sure I've got the right cable installed.

Here's one thing that evryone seems to have in common, a GeForce card. Not everyone, but almost everyone. Mobo, chipset, processor, everything else seems to change (even W2K running instead of XP, but most commonly XP). Through an AGP slo, not PCI.

So, there's some more avenues I want to explore. Questions:
What can you tell me about this, from my Sys. Info screen-

I/O Port 0x00000000-0x00000CF7 PCI bus
I/O Port 0x00000000-0x00000CF7 Direct memory access controller

I/O Port 0x000003C0-0x000003DF Intel(R) 82845G/GL/GE/PE/GV Processor to AGP Controller - 2561
I/O Port 0x000003C0-0x000003DF NVIDIA GeForce FX 5600SE

Memory Address 0xE8000000-0xE9FFFFFF Intel(R) 82845G/GL/GE/PE/GV Processor to AGP Controller - 2561
Memory Address 0xE8000000-0xE9FFFFFF NVIDIA GeForce FX 5600SE

IRQ 16 NVIDIA GeForce FX 5600SE
IRQ 16 Intel(R) 82801DB/DBM USB Universal Host Controller - 24C2

Memory Address 0xD0000000-0xDFFFFFFF Intel(R) 82845G/GL/GE/PE/GV Processor to AGP Controller - 2561
Memory Address 0xD0000000-0xDFFFFFFF NVIDIA GeForce FX 5600SE

Memory Address 0xA0000-0xBFFFF PCI bus
Memory Address 0xA0000-0xBFFFF Intel(R) 82845G/GL/GE/PE/GV Processor to AGP Controller - 2561
Memory Address 0xA0000-0xBFFFF NVIDIA GeForce FX 5600SE

I/O Port 0x000003B0-0x000003BB Intel(R) 82845G/GL/GE/PE/GV Processor to AGP Controller - 2561
I/O Port 0x000003B0-0x000003BB NVIDIA GeForce FX 5600SE

The error codes I'm getting are mainly the ones listed elsewhere in this thread, 1000007f, x050, x08e, IRQ not less or equal, and some pagefile faults....

Anybody have any ideas, is this thread still alive?

Thanks for anything.