So my brother gave me an older Satellite M55-S135 laptop. Pretty sure it has an old Celeron 1.5ghz processor and like 80 gigs of hdd space at best lol. I do wanna keep it around for datalogging Hondata k-pro my car but when i turn it on the screen has a red tint to it during initial boot-up. Then the windows screen comes up and looks normal. Then when the desktop starts up the screen goes 99% dark. I can BARELY follow the mouse icon. It obviously works when i hook it up to an external screen but i was wondering if this means a broken screen or bad connection. I've never taken apart a laptop screen but it looks fairly easy. So my main question is...what should i look for behind the screen when i remove it? I appreciate any feedback. Thanks, Jeff.