In these past two days I have received 0xA,0x8E and 0x23 errors in the dumps. This problem has been going on for a long time, but I had switched to Linux and avoided the BSOD, now that i'm back on windows its doing it again.

Ram:
Yes I did have faulty ram, and i've replaced it.
I tested both sticks with memtest86.

Virtual Ram Problems:
I doubt this, since I have been having the same BSOD errors on
Windows 2000 as well.

I have the latest drivers, and I've used the old ones and the new ones with the same errors.
Disk check was not much help, still occured

System Specs:

Hard drives:
WDC WD400BB-00FRA0
WDC WD800BB-00JHA0

Nvidia Geforce FX 5200

PIONEER DVD-RW DVR-109
SAMSUNG CD-R\RW

Abit VI7 / VIA PT800 + VT8237
Intel Processor 3.0Ghz

On Board,
Audio - AC'97
Lan - VIA Rhine II Fast Ethernet
RAID Controller

512MB of Ram (currently OEM brand, previously fault Kingmax)

I have, disabled audio, used a PcI Lan card, changed the Ram, reinstalled windows many times both Windows 2000 and Windows XP, used different hard drives.

I have attached my zipped minidumps hopefully someone can help.
Some of the dumps repeat themselves, I'm not very good at this sort of dump debugging, but there seems to be a pattern, its all based around a driver or hardware fault that access memory it isn't suppose to access but i'm stumped with find out what it is.

My system dates and times are off, all the dumps are made in April this year not last year this is due to me trying to reset my BIOS