mohit said:
are you logging in as administrator or not ?? u need admin privileges for most of these config files.
msconfig needs admin privileges, but if you try to access as a regular user, it will give an error message. But from his post, I dont think he is facing that problem. Also, regedit will work for regular users also...
@testergt: Are you able to go to safe mode and run the commands? If so, load msconfig and check if there are any suspicious startup entries. Check your system for spyware and viruses. If there are none, also run sfc to ensure that your System Files are OK...
Arun