Cheap mobo = big headache

It has been a week now. I'm still struggling to find a workaround to my BSOD issue err.. apart from finding a solution to ease my uncertainty in the office but that's another story. Back here, as soon as I'd upgraded my PC and reinstalled back the Vista, it threws an agp's BSOD. So, I updated the agp driver withthe native Nvidia forceware. I know some of you might be curious like 'What the ?? What type of mobo I'm using with a Quad Core and an Agp slot on it? ". Well, it's no surprise thou as my Asrock is using the Via PT880Pro chipset which allows both an AGP 8x and the PCIe 4x display, and DDR400 ram as well. I know, it's a bit of an old tech but I need to recycle some of my old parts while running the new tech which falls within my budget. Anyway, back to my BSOD issue. After I updated the agp driver, the problem gots better but this time it didn't throw the BSOD. Surprisingly, Vista was intelligent enough to repair itself and I didn't have to perform the usual 3 finger salutes when the error occured. I'd updated the bios and the Via chipset driver but the problem still pressisted. I think yesterday was the worst when it threw the BSOD again but this time, it gaves the memory management errors. So, that's the last straw for me. I reopened the casing, swapped the ddr channels, adjusted the agp and making sure all of them were clipped tightly onto the slots. I tried to maximised the ram usage up to 95% for about 30 mins and the desktop was struggling to keep up with the process but it didn't crash or threw an error, or reappearing of BSOD. So, that's a good news.