Two questions and a suggestion.
1. Why do post in the Windows 2000/NT forum, if this clearly isn't a problem about these OS'es?
2. What makes you think you have problems with the RAM?
Post in our Windows Vista forum (http://forums.cnet.com/windows-vista-forum/)and tell more about your problem than you do now.
I resently purchased a HP Deskjet D1660 printer for my daughter and before reading the instructions she plugged in the usb cord into the computer. The instructions clearly state DO NOT PLUG IN USB before installing the software. Somehow it installed into the memory of her operating system. I manually removed the printer but we are now having problems with the RAM and programs are not working properly. Previous to this problem I had just installed a new 500gb harddrive and Windows 7 Premium. I have tried system restore and checked the memory but to no avail. I would really appreciate ANY help!