I have left my laptop that runs my laser on for like ever, lately its been doing weird things like just trying to reboot or something and theres a msg on the screen that say can't find boot device. I have to hard shut down and then start it again and it goes thru a gazillion checks and then says it had an abnormal shut down press any key to restart. then it will restart and be ok for a couple hours then It does it again and I have to go thru the whole process again.
any ideas whats going on????