I have a toshiba satellite laptop. I had a cracked screen that i just replaced. However, upon turning it back on the new screen lit up for about 3 seconds and then went black. And then about a minute later the computer turned off. I tried removing the battery and trying that shift/f8/power trick but that did not work either. I am wondering what is wrong with my computer and how can i fix it. I am willing to try anything, thanks.