New mobo, POST, but no visuals
Okay, I'll start out with the original problem.
I'd been getting a KERNEL_STACK_INPAGE_ERROR off and on for a few days when it started getting worse. MUCH worse. After about a week, it got to the point where I could hardly do anything in windows without getting that, or one of the other associated errors. I read up on the subject, and concluded that my mobo was the most likely culprit. A couple months prior, my dad had actually managed to short out a front USB port by inserting a cable upside down (quite a feat, I know, but he tells me he did it). Says he saw a spark, and ever since then, that USB port has not worked. The other one on the front is fine.
So I ordered a replacement motherboard - same company, same model, but slightly different layout. No problem; everything was labelled. I installed the thing, fired it up, and the problems began anew.
Last night, one of two things would happen, depending upon whether or not the FDD IDE cable was plugged in.
1. If it was unplugged, I could boot it up into BIOS, but just before it would normally display the "Windows XP Loading" screen, it would deliver unto itself a swift kick in the rear and reboot. I tried Safe mode, and nothing worked.
2. If it was plugged in, the monitor would briefly flash amber/green (it's a dual-color LED, green for on w/signal and amber for on/no signal/standby) . . . like both LEDs were on at once, which to me sounds like a signal error. Then it would just go amber, and the computer would make its normal POST sounds, but the screen would not return.
But today, I can't get any sort of screen to come up. #2 happens regardless of whether or not the FDD IDE is plugged in (there is no labelled pin #1, so I've tried it both ways). Here's my specs:
512MB RAM (DDR400, one stick)
AMD Sempron 1.58
120GB HDD (master)
20GB HDD (slave)
Belkin 802.11g wi-fi card
10/100 ethernet card
256MB ATI Radeon 9250, AGP