What did you do when the back cover was off? Or put another way, why did you take the cover off in the first place?
OK, so I have an Toshiba Satellite M115 S1061. I took the back off and then when I put it back on, my computer wouldn't turn on. I really don't think it's my power supply because it was working right before I took the back off. Can anybody diagnose this? Thanks!