Pakard Bell BSOD Error 0x00000019

It randomly crashes (BSOD) with what seems to be the same cause, but I cannot trace the source of the fault. In an attempt to clear the problem I removed the hard disk, connected it to another PC and re-formatted it. I then re-installed it and loaded Windows 7 anew. Still the fault persisted. Next I downloaded Memtest to check the memory (2x 1Gbt rows) and removed both and only installing 1 at a time in both slots to cover all options. Still the problem persisted. Next up I down loaded a disk checker. Nothing wrong showed up here. I removed the fan from the processors and blew it through with an airline along with the power fan. The PC is now a lot quieter, but the fault is still there. I then removed the TV card, it�s not that. I have had the BIOS checked and that is fully up to date. Now I�m running out of options. I down loaded a Blue screen viewer so I could interpret the minidump data files as the �Windbg� program from Microsoft did not show much at all. All the dumps show the same problem with the same Parameter codes:

Bug check String: BAD_POOL_HEADER
Bug check Code: 0x00000019
Parameter 1: 0x00000022
Parameter 2: 0x00000000
Parameter 3: 0x00000000
Parameter 4: 0x00000000

The results say the cause is either one of the following 3 drivers, but I believe that these are all windows programs and are not related the additional installed hardware: Ntfs.sys, ntkrnlpa.exe, ntoskrnl.exe. I have stored all the minidump data if that is of use to anybody. The PC is around 6 years old and below id the PC data. Operating System System Model Windows XP Home Edition Service Pack 1 (build 7601)

Packard Bell BV PB34338801
System Serial Number: 127776790307
Chassis Serial Number: 50424E Processor a Main Circuit Board b 2166 megahertz Intel Pentium III (2 installed)

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