I have a windows 7 computer i got two years ago. I did some things to fix the network, and then left my computer there to 'sleep'. When i came back after eating lunch, I realized it was frozen solid. Completely frozen except for the mouse. Ctrl +alt + del does not work. Andthis has happened before, about 15times already. As you can see, im a little worried. When it happened in the past, I just force restarted and go into safe mode to troubleshoot or other ways to fix. But this time, im stuck: nothing works.The SFC SCANNOW command, the anti-malware, antivirus, the system restore all dis not work. Please help.
Note: i cannot start windows normally. if i do, i get stuck on the welcome screen or the users screen.