go to the Google store and look for a good Malware scanning utility. It is rare for a phone or tablet to get a virus but not impossible because anything that can connect to the Internet can become infected.
this can be a possibilty that the HD can be physicall damaged or your HD can be fine but a virus or corruption won't let you access your data and the operating system what you can try to do is open up your computer and remember to disconnect your computer and when that is done press the power button because your computer can still have a little bit of electricity when the power cable is disconnected, and ground yourself by touching the metal part.... once that is done disconnect the hard drive and use a known good drive and reinstall the operating system if your old drive is physically dead... now if the drive is fine but a virus or a corruption occured just reinstall the operation system this will removed all of your data if you have some data you want to keep I hope you backed up your information.
it can be two things, the motherboard can be fried or the power supply can be damage. what I would do is troubleshoot both devices with a known good device, the question you have to ask yourself first is: is my laptop still covered under warranty if it is let the manufacturer fix it because this void your warranty. If your not covered and you feel comfortable with doing the repair by yourself DO NOT ORDER PARTS FROM EBAY. I would go to Best Buy or whatever computer store that is close to you for parts.