So i noticed that even though my laptop was going on the internet and playing movies and music etc ok ,keyboard and mouse input was behaving really weird , i would type and it would show what letter i pressed then erase it, i would press on the start button and it would immediately close Start, so i wanted to check for viruses, i did a scan with windows defender and one with malware bites but both said my computer was clean. But then my computer got stuck so i had to turn it off by long pressing the turn off button. Then when i opened it again it was on the preparing automatic repair for about 3 hours so i again manually turned it off then ,when i switched it on it booted ok and i went to refresh it . Then when it did what it had to ,it restarted and on the starting screen it said preparing, it is 12 by now so i go to sleep and i wake up in the morning and it still says preparing, so i hard press turn off again and it gets stuck on undoing changes, i really don't know what to do it won't get past the starting Toshiba screen ,i guess i really screwed up but i have no idea what i can do? Please help.