OK so I have a Compaq presario cq56.. Upgraded online from windows 7 to 10 a few months back. Two days ago I powered up the laptop and all I get is 'preparing auto repair' then 'diagnosing your PC' and then a blue screen saying your PC didn't start correctly. I've tried all available options. Reset-nothing, system restore- no restore points created, start up repair says attempting repairs- nothing, boot in safe mode- nothing.. I have none of my files backed up. No windows 10 disc as it upgraded online. And windows 7 came installed when I purchased the laptop 5 years ago. I have spent hours looking through threads on this and none have helped. Apparently a common issue as far as I can see. I am to the point of being totally lost. Can anyone help ? Please !!!!