|To clarify: when you start up there is brief login screen, then the system boots OK to a normal desktop screen - or does it simply go to black? I ask as your two posts seem to be a little contradictory and confusing...|
Which country are you in; where did you buy this Satellite - which is what appears to be - a Satellite laptop? Also "when" did you buy it (as it may still be under warranty)?
I cannot find it using the model details you give - at least on the UK and USA Toshiba support sites.
Check model number again; and also can you find and post the serial number to. The latter may enable anyone to find it?
Do you have the manual for it?
Have you ever set a password in the bios setup - which in effect locks the system from unauthorised use?
If you also can obtain/create a Ubuntu DVD do so; and then se if it will boot up with that… You can download, save and burn to a DVD an ISO for Ubuntu (a Linux variant) - free at: