You can do it by WiFi, Check out the link in the sources and related links (below).
Clean your AC adapter.If your laptop is old then there may be a problem with laptop's charger port contact your laptop provider.
by phone or laptop
I think your laptop's motherboard has malfunctioned contact your laptop provider to fix it.
You should not attempt to unlock a laptop that you just found. It is not yours. You should contact the lost and found department where you found it and/or contact the police.
You will have to contact an IT technician.
Email the manufactorer
ring her
Well, I would recommend contacting the manufacturer of the laptop stand to inquire about it's features and functions. There is also the option of locating a manual for the laptop stand.
If Windows startup repair will not work then you need to contact support
If you have a Mac, the Apple Store is a great place. Otherwise, contact the maker of your laptop and have them fix it. Usually you have to ship it out but they return it quickly.
If you contact the maker of the laptop computer they will be able to tell you where the nearest place is that can repair the laptop to the makers standard
Contact your nearest Apple retailer, or for the best advice contact them via internet.