Hi, I'm a new forum user and appreciate any responses to help me with my problem. Here we go... My pc won't open any executable applications or programs. Windows explorer works fine and I can navigate the hard drive... but I can't run any programs, not even in safe mode. --I returned home from work yesterday when my wife told me of the problem. She said the computer auto-rebooted after downloading an update and nothing would open afterward. --After several hours reading other posts and trying various fixes, nothing seems to work. Here is a list of major fixes that I've tried: (1) system restore to earliest time (from safe mode), (2) merge regfix for .exe file association, (3) reboot sequence using msconfig that deselects processes to isolate problem Anyone have an idea whats going on? How to fix it, preferably free?