Problems with Hercules Prophet 9700 (non-pro)

Hi, I have had many problems with my computer, it will simply blue screen me and then restart with differnet errors each time like "IRQL_NOT_LESS_OR_EQUAL", "PAGE_FAULT_IN_NON_PAGED_AREA", "DRIVER_IRQL_NOT_LESS_OR_EQUAL", and "BAD_POOL_CALLER". It is so annoying sometimes. But even when formatting and installing XP, it is completly unpredictable in that I could do the same thing and get a different error each time. So I put in my old graphics card and then it installed perfectly. So am wondering if anyone else has had the same problem with a Hercules Prophet 9700 (non-pro) or could help in anyway. Cheers.

--dwarfer--

I get IRQL, PAGE and DRIVER with an unstable overclock, these blue screens are usually caused by the ram but it could be the gfx card if uve narrowed it down.

yup those BSODS are RAM errors 99% of the time, could be dodgy video card ram but more likely to be something to do with the system ram. Make sure its not cheepo unbranded stuff or if it is that its the same manufacturer and speed. search google for memtest and test the ram with that, they will at least eliminate it

I have downloaded memtest and have been running it now for 4 hours and have had no errors occur, so am thinking it maybe is the graphics card? A friend of mine said that it could just be a faulty card. Hasn't crashed once since I've swapped it for my old ATI Rage 3D Pro :S

--dwarfer--