I upgraded my HP Pavilion Dual Corr Pentium from Vista to Windows 7 and it's been nothing but trouble. The machine won't shut down normally and it’s stating that something is running and when I CTRL-ALT-DEL, nothing shows. I contacted MS in Indian and ended up talking to a clone that new less then I so I’m thinking that I should try a REG clean program, so can someone recommend one. I tried one years ago an dumped my machine and had to F disk and reinstall everything.