Hello, I am running Windows 7 ultimate 64 bit, build 7600. I installed it on my HP G60 230US, using the SLIC toolkit and modified the SLIC table. All was well till 3 days ago. Suddenly, I am unable to open any applications including Firefox etc. The only application I can open is Comodo. If I right click on the desktop and hit "Personalize" I get an error message "Server Execution failed" I am afraid that either I picked up a virus or that Comodo removed some system files by error. Since I cannot launch any programs, I cannot run any spyware checks / virus checks ... other than Comodo / windows defender. They did not pick any issues. I have tried many methods described on the internet including selective startup etc, to no avail. I have done a system restore to 1/31/2011, but still no help. I can open folders, right click for properties etc, but cannot open any documents. The only program that seems to work is Adobe Light room 3 64 bit. I am unable to uninstall light room or any other software, becaue I cannot get pop up windows.. I am getting all windows updates without a problem. However, if I right click on "My Computer" and select "Properties" I get nothing. At this point, I am at wit's end. I have backed up all my photos & music etc. I am hoping that I don't have to reload windows. If I do have to reinstall, will the version that I got in early 2010 still work? Thanks!