I installed W7 over Vista Home Premium, the upgrade went flawlessly and took about 3 hours on my laptop. However, I have a couple of annoyances, one I can't shut down the computer without holding down the on/off button. The shutdown menu option doesn't do anything. I also keep getting an error message saying I'm out of memory and I get the blue screen and reboot every once in awhile without any apparent cause or reason... Any ideas would be appreciated, I'm not a real computer whiz so keep it simple...thanks!!!!!