2 blue screen error message - what are they?

[akhonda97]

i'm kind of trying to troubleshoot my pc - and i finally remembered that instead of having my pc automatically reboot on errors, i could disable that and get the "blue screen" - so i did that (i was having a problem with my computer rebooting itself when i was trying to do an active update for an aol beta product) and the error i received for that issue was "BAD_POOL_HEADER" - the stop code was: STOP: 0x00000019 (0x00000020, 0x859ED1E8, 0X859ED300, 0X0A230001); a second error i received when i had started up my computer after adding a new case fan & a pci-based fan for my graphics card, after my computer froze up and i hit the restart button on the case and i got the "microsoft error box" after reloading windows and it had this error in it: "STOP: 0X000000EA Thread Stuck in Device Driver (Q293078)" - i went to the microsoft page about that one but it didn't really help any :-P it hasn't happened again.

just looking for some clarification on those two errors and what they possibly might be. my computer specs are:

Windows XP sp2
AMD Athlon XP 2500+ (1.8ghz)
1gb ram
120gb HDD(main); 40gb HDD(backup)
BFG Nvidia 6200 oc 256mb AGP8x
(case runs 3 case fans, pci-fan, powersupply w/ backside & bottom fans) - definitely cool inside) - no new added hardware, only a couple of fans

[flanzig1]

If the PCI fan is in the slot next to the video card, that could be causing the "thread stuck in device driver". Move the fan card down a slot or two.

[akhonda97]

my pci fan, it takes up 2 pci slot spaces, but is installed with one empty pci slot between the slot it is plugged into and the agp slot. i haven't gotten that error at all anymore - only once. (pci fan) (empy pci slot) (agp vid card) <-- that's kinda how it is in my case