[SOLVED] Mageia 3 won't start after todays' updates - HELP

I downloaded and tried to install todays' updates but got a load of messages regarding certain updates (several) that required other items. As I am only a user and not technical I didn't know what to so I left it and quit out. I rebooted later and the normal 'Boot Mageia 3' screen came up then the hard drive kept going but my monitor went blank saying 'No signal Input'. Next tried Safe Mode - same result. What's happened !!! HELP.