My son's 6 year old Toshiba Satellite A205 S5871 laptop only shows gray now on boot up. He took it to school for a project and he said he didn't drop it or anything but it stopped working there. Now when you turn it on, the screen is entirely gray.
I plugged it into an external monitor and that works fine. Ubuntu boots up normally. I took the bezel off the front and disconnected/reconnected the video cable but that didn't help.
I want to fix this if I can but am afraid that if I buy a new LCD panel it will turn out to be something else is wrong. I've read online reports of bad inverters and video cards causing this problem too, for instance.
I have pressed the function key (fn + F5 on this thing) for presentation mode. That didn't help.
Are there any tests I can run that will help me know which part needs to replaced? Anything I can do to narrow down the source of the problem. Thanks.