Please help: screen goes very dark - fn+f8 helps only for short term

Do you have a question? Post it now! No Registration Necessary.  Now with pictures!

I would be very grateful for some diagnostics on the probleme i have
with my toshiba tecra 8100 - since I desperatly need it to get me
through the last four weeks of my diplomy thesis ;-)

while working, from time to time the screen goes very dark. it is still
possible to see something when looking very carfully. Pressing fn+f8
five times consecutively  helps: the screen resumes its original

The problem occurs more and more frequently, sometimes every other

Is this a software (driver/bios) issue - and there something I can try
to solve it?

Or is there some obvious hardware problem I can fix myself or do I have
to let it be fixed?

Thank you very much for your comments

Site Timeline