I recently replaced my old Dell Optiplex with a refurbished Optiplex GX280 bought on ebay. It arrived and was great, matched the monitor and keyboard saved from the previous desktop, and ran good. Conformance index score was 5.5. The only issue as it came with XP, which does not support many of the programs and software I use frequently. But I was prepared, I have windows7 that I purchased for the previous Dell, and installed it with no problem, as I had before. I started having all kinds of issues, There is no driver for the graphics controller that is compatable with the older pc and windows7, printer won't install, etc. Finally ran compatability test and found the model I have is NOT comparable with 7. I cannot afford to replace it, is there anything I can do to it as a cheap fix to get it to run windows7 ? It is running it actually, but not fully functional, Index score went down to 1.3. I added 2g of RAM, bringing it up to 3GB, only using around 30% of the 80GB HDD. Am wondering if a better processer would fix this?Currently has Intel Pentium 4CPU 2.80ghz.