I'm having a bit of trouble with my toshiba laptop (Satellite C55D)
It starts up when i turn it one, to the Toshiba Leading Innovation screen for maybe 10-20 seconds, turns black, and starts the entire process over again. I don't know how to fix it. Please help !!
It appears you have a hardware problem and the BIOS just restarts over and over. You might have a memory module problem, a hard disk problem or a motherboard problem. Other than clean the memory module contacts there is nothing the average user can do.
I suggest you have a local PC repair shop diagnose the problem.