Update. Used blue screen viewer as right clicking said. Managed to look at the minidump and in each of the dumps a .SYS file related to AVG anti virus was the common theme. Renamed it and rebooted and hooray, it worked. But now different set of problems. No more blue screens but can't do backups, can't do system restores, lost some drivers, can't download any new antivirus software. Getting mighty stressed over this now.