BSOD on Intel cpu/mobo and XP Pro

Hello all. I've been having problems with my PC lately and BSOD. My computer in question is set up as follows:
Intel D865perl mobo
Pentium 4 3.2 gHz proc
BFG Tech 7800 agp
Kingston DDR2 2gb (4x512) in dual channel mode
The BSOD error screens are almost never the same from one time to the next; I see different error codes each time. At first I thought maybe it was a hdd corrupting but I just didn't know for sure. The reason I kept leaning towards a hard drive problem was because most of the BSODs would occur upon update/restarts or morning power up. The system would make it all the way to the black XP loading screen with the bars cycling along the bottom, and then all of a sudden it would hang and BSOD. Sometimes it would boot up into XP simply off a reset, while other times it wouldn't even hang on XP load I'd just see the XP logo briefly and then blue screen again. I'd get so frustrated at it I was ready to throw the machine against the wall sometimes.
I started reading around and searching out solutions on the net and noticed some responses to other people's BSOD problems could be attributed to a failing PSU. My brother in law had a Thermaltake 430w psu he let me try out, but it was still having problems. I also noticed some people saying after changing out video cards they had accidentally unseated their ram. Since my card was quite close to my ram modules, I made sure to check the video card, ram, etc to see if anything wasn't right, but after reseating the cards (AGP vid and PCI expansion) and the ram and blowing out any dust accumulation I still kept getting the same problems.
So, back to the hard drive. The hdd in question was a SATA 80GB WD, and I didn't have another system capable of connecting the drive to test it out. So, after backing up my data, I tried to run a disk check and reformat the drive. It wouldn't let my XP disc even load, kept getting BSOD errors. I just dealt with it a while and tried to make sure it didn't get turned off. As long as I kept it running when it would successfully boot into XP there were no problems at all. Could play games off it, internet, pretty much anything just like it normally would do.
Finally, I was able to get a new hard drive. Of course, when I tried to format and load XP, I get BSOD on my first two attempts. It actually ran the disc and allowed me to format the drive, but when it tried to boot XP got blue screens both times with two different error messages. The new hard drive is a WD 120gb IDE and still can't get anything to work.
I've never overclocked anything nor changed any settings in the bios screen other than the ability to boot from USB. I just don't know anything else to do. I feel like after trying a new hard drive and still can't get the problems solved this has to be a motherboard problem now. Any and all help would be greatly appreciated.

Yeah. that's exactly right. When it would start into XP I'd keep it running, turning down all windows updates, etc that would require restart. If my little boy would come by and hit the reset button because he didn't know better I would hold my breath waiting to see if it would come back up or head back to blue screen. Sometimes it would and sometimes it wouldn't.
You say could be a defective mobo... meaning it's gone bad after years of use or maybe some sort of virus/spyware/malware could have messed up the bios or is that possible?

Hi!

Got at work 4 of them and 2 already dead with same reason. I'm sure that it is motherboard issue and to be clearer, its cold soldering. I dropped one of them to the floor and it worked flawlessly about 2 weeks after that and then the issue started repeat himself.
Capacitors are fine, besides, issues with them would just freeze computer not make BSODs.
So, no problems to solve from my point of view