Toshiba satellite laptop. can not enter boot menu, done tried holding the zero and turning on, didn't work, tried taking the battery out then holding the power button for 30n seconds didn't work, tried pressing f1,2,3,4,5,6,7,8,9, etc, alt, control and delete..didn't work. done took out the hard drive and running it like that wont let me says to install memory or something..anyway error code I get is unmounted boot volume..sometimes I get just a dark screen with my cursor..also I have no installation dvd, I did create a usb device but if works I do not know bc of the fact I can not access any menu on start up or a\in general........PLEASE PLEASE PLEASE HELP!!! I ALSO CALLED MICROSOFT AND IT WOULD COST ME $99.99N OR $149.99...DEPENDING ON WHICH PLAN I CHOSE TO RECIEVE THE HELP I NEEDED TO RESOLVE MY ISSUE, I HUNG UP ON THEM!