My laptop used to work fine with Windows 7 Home edition. Today I installed SP1 and now its shutting down abruptly. There are no error messages, nothing in event viewer. It doesn't even say that it was shutdown abruptly when i reboot. Anyone had similar issues with SP1 ? Update: My biggest mistake is installing this piece of junk. After struggling a lot i uninstalled the SP1. But my laptop is shutting down abruptly even without it. I used it for a long time before installing SP1 without any issues. GOD Save us !!!