|The hard drive may well be damaged and failing but I don't think that would cause the video symptoms you are seeing. |
What is "the toshiba b. board"?
If you have any personal files you need to save I recommend you immediately make copies on some external media.
Also, if your laptop did NOT come with any restore disks you should attempt to create them now.
As far as repairing the laptop I recommend you contact an authorized Toshiba repair center for an evaluation.