Hello, I have 4GB of RAM installed on my motherboard. However, when I run DxDiag, it's only displaying 3.2GB of RAM. Could it be that my bios needs to be upgraded in order to detect the full 4GB? I am currently using the default system bios. I have an AMD Athlon II X4 640 Processor 3.0GHz, and an ASRock M3A770DE Motherboard.
I am not sure what bit operating system I have (I've been told, if I don't know, then I probably have a 32bit OS), but when I check system info, DxDiag, EVEREST, System Information for Windows, etc. it does not indicate what bit my OS is, it simply says "Windows XP Professional Service Pack 3".
I would do a clean install. Back up everything you need to keep to an external drive or a thumb drive or even a DVD or CD and then do a clean install of Windows 7 64 bit. There is no upgrade path from 32 to 64 bit.
Okay, thanks. Is backing up different than "copying and pasting" all the files I want to keep? And, would I be able to keep my program files (my installed games) / would they be playable after I transfered them back after Windows 7 was installed?