Listen closely to the beeps. They generally indicate a hardware failure of some kind and the beeps can help identify the cause. Assuming you have AMI BIOS (which Toshiba suggests applies to models similar to yours but I couldn't find those for your specific model - in fact, your model is no longer even listed in product support - BTW it is a Satellite and the closest I could find was A135-S2346 which is probably very close, but isn't good enough to be certain especially since it talks a lot about 64-bit criteria), here is how to interpret the beeps: PC Hell: BIOS Error Beep Codes
. Please post back with the beep sequence and the meaning of the beep sequence you are hearing (and be sure to use the AMI BIOS listing).
Thanks! Once we hear back from you, we may be able to find a solution (or at least try to confirm the problem) having a better idea of what it might be.