If you're experiencing problems with your Toshiba Satellite, don't panic - there are usually simple solutions available. Summary here.
If you're not able to start your laptop or it's not turning on, the first thing to do is check for power cables. Make sure all your cables are plugged in firmly and that the power button is working - if it's not, you may need to replace the battery.
If you're still not able to start your laptop, try unplugging all the cables and then plugging them back in one at a time. If that doesn't work, you may need to replace the hard drive. To do this, you'll need to remove the laptop's battery, unscrew the hard drive cover, and replace the hard drive.
If your laptop still doesn't work, there may be a problem with the motherboard. To check this article review, you'll need to remove the laptop's battery, unscrew the bottom cover, and take out the motherboard. Then you can test the motherboard by plugging in an external monitor.