Lapton won't power up
Laptop was on then cut off, now it won't power up. No lights no fans
The Toshiba Satellite M45 Laptop is designed for powerful, portable, multimedia computing. It features a 15.4” WXGA Display running Microsoft Windows XP, with 1.6GHz Processor, 512MB RAM, and 80GB Hard Drive.
You say it won't power up at all so I assume that means it won't boot by the battery either. Do you know the state of charge on the battery. If the power adapter has been dead you may have been running on battery until you drained it. I would try another adapter --preferably borrowed not purchased first. If it powers you have your answer--if not I would think you could eliminate the battery as a cause of your problem. You may want to open your computer to check for physical signs of damage and for that reason I am including a link for opening your computer. Good luck Ralph
To add to rj713's answer, you could try one more step which is to remove the battery, unplug the unit, and hold the power button down for a full 30 seconds (1 Mississippi, 2 Mississippi) then put the adapter back into the laptop and see if it powers on. If this does not work, there are only two answers:
1] Dead power adapter (easy) -universals are sold at many local places
2] Damaged internal parts (hard)
For the second answer, generally the power port on a laptop gets abused quite a lot with plugging and unplugging, pushing it to hard, bumping it while it's plugged up which jams the internal components pretty bad.
I see that this is an older question, so I hope you have your problem fixed. My answers are for archive purposes if you have :]