I have a toshiba satellite 1405-s151 laptop. Recently, the screen has been flickering light and dark and there is a big white line on the bottom of the screen that starts at the taskbar and grows a bit. These symptoms go away and come back intermittently. I do not know if this is a virus/spyware problem or broken lcd that is going. Also, I cannot restore to an earlier time w/ system restore it will not let me although there are many savestates. I have run many different virus/spyware programs and did not find anything. I have a law school exam coming up soon and I need to fix this problem asap! If anyone can help me I would greatly appreciate it. Thank you in advance!

back your important files ASAP.

I suspect your LCD is going bad. While you can buy a kit to replace it, I don't recommend doing it yourself. Take this one to the shop.