I have a laptop~ Toshiba satellite C855-S5306 to be precise that stopped booting to windows all of a sudden. The services of an experienced and capable repair man is welcome to get it working again. Below are a list of some of the symptoms.

1. The the display screen is shaking all the time its when powered on.
2. After some time experiencing this it couldn’t boot to windows .

Also , i need you to look at and to work on a set of desktop computers in a business center and cyber cafe that i run that some aren’t booting or powering on at all. Any one interested must have sound knowledge on computers, hard ware , software  and repairs and capable to restore back faulty systems to their appropriate functioning state. If am impressed with what i see i will be committed to hiring you long term.