Has anyone seen a computer before that restarts when ctrl+alt+any arrow key is used? The problem is occurring on one of my coworkers computer, I've done everything I could think of to remedy the problem. Is there something else I can do? The graphics card and monitor support that key combination to move the screen orientation around. Instead the computer restarts. Virus Scan has been run as well as Ad-aware and Spybot, all came up with nothing. I checked the graphics card and monitor drivers, they are properly installed and up to date. I've never seen this before. Thank you.