Start in safe mode, then log in as Administrator, and then tell us if you can open anything. Also, post some more info about your PC so we can know easier how to help you. (OS, Manufacturer, Age, and other specs.)
Ok so here's my problem: my laptop which runs on windows xp is having what maybe a virus related problem. Every time i try to open a file or program I get the following message "Windows cannot access the specified device path, or file. You may not have the appropriate permission to access the item." I'm not able to open any program on my PC. I've tried rebooting but I get the same problem. Any ideas ???