Random Mini Dumps using XP (SP2)

[Ustishrike]

OK, here's the whole ugly story. I bought a refurbished HP Pavilion 762n (P4 2.26 gig). As soon as I started it, I got many ramdom BSODs. It had a partitioned HD with recovery options. I tried that but couldn't even get through it without BSODs. So I reformatted the HD, got rid of the recovery partition (FAT 32 file system) and set an active partition. I reinstalled a fresh copy of XP using the NTFS filing system. Since many of the stop codes pointed to memory and/or driver problems I stuck 2 new PC3200 DDR 512m memory sticks in it (although it originally had PC2100) and ran a memory test (came out OK). I obviously had to get some drivers and I went to great lengths to make sure I had the right and most recent ones. I also put a Nvidia FX5500 256m Video adapter in it (got the right drivers, I'm sure). I have onboard audio (Realtek AC97) and I got the newest drivers for that as well. The machine runs great now, EXCEPT that I still get random mini dumps (I have it set on auto restart now and just check the Event Log so I don't have to keep staring at blue screens). It doesn't matter what the application, these errors are completely random. I can go days or minutes between them. I usually get the same ones in random orders (a total of 7 that I'll list below, although it is usually the same 5). In the Event Log I occasionally get disk paging errors as well. I have run a disk check many times and they come out OK (although I still wonder about this since it was originally partitioned using both Fat32 and NTFS). I have the virtual memory set to "system managed" as recommended by Microsoft when you get these type of paging errors. I am now inclined to believe that the disk may be bad, or I have some sort of power supply problem. I am a total layman when comes to computers so I am just grasping a straws at this point. I guess that's it. PLEASE HELP. I am sooo frustrated. Here's that list of events:

The computer has rebooted from a bugcheck. The bugcheck was: 0x1000000a (0xe22e7708, 0x00000002, 0x00000000, 0x80563cd6). A dump was saved in: C:\WINDOWS\Minidump\Mini050805-03.dmp.


The computer has rebooted from a bugcheck. The bugcheck was: 0x10000050 (0xe45244e8, 0x00000000, 0x804ed63e, 0x00000001). A dump was saved in: C:\WINDOWS\Minidump\Mini043005-05.dmp.


The computer has rebooted from a bugcheck. The bugcheck was: 0x0000004e (0x0000008f, 0x00023bd9, 0x00030f39, 0x00000000). A dump was saved in: C:\WINDOWS\Minidump\Mini043005-06.dmp


The computer has rebooted from a bugcheck. The bugcheck was: 0x100000d1 (0x00230026, 0x00000002, 0x00000000, 0xef8cf31a). A dump was saved in: C:\WINDOWS\Minidump\Mini050305-01.dmp


The computer has rebooted from a bugcheck. The bugcheck was: 0x000000de (0x00000002, 0xe14cd078, 0xe14cd0b8, 0x157da8c2). A dump was saved in: C:\WINDOWS\Minidump\Mini050405-01.dmp


The computer has rebooted from a bugcheck. The bugcheck was: 0x0000001a (0x00041785, 0xc0c00000, 0x00014c23, 0x00000000). A dump was saved in: C:\WINDOWS\Minidump\Mini050405-04.dmp


The computer has rebooted from a bugcheck. The bugcheck was: 0x1000008e (0xc0000005, 0x80567d24, 0xed6e48f8, 0x00000000). A dump was saved in: C:\WINDOWS\Minidump\Mini050405-07.dmp