wopman 0 Newbie Poster

HELP!!!
i have a mac pro lap top some time a go i had windows 7 installed two days now the screen has been black , I turn it on evry thing worked but nufin on the screen but black
i also installed T V Turnner on my lap top could that have some thing to do with it ??? If some one could give me an idea what went wrong and weather it can be fixed with out cost
or with cost...?