Black screen No task bar

Ive been using my laptop in black screen, no task bar and no desktop for months now. I am not a tech guy but tried everything I can to resolve the issue (system restore, repair in f8, etc) but no success at all. The problem suddenly appeared and I can only use the internet and folders by using task manager. Can you guys help me? Although Im kind used to the situation still cannot change the fact its hard to use it without the proper desktop and task bar.