Zelda ground black-out

Hi, i would like to know if anyone could help me with a problem that i have in zelda ocarina of time.
The game used to work just fine. Then one day when i turned it on again, the ground in the game just got blacked out, and most of the graphic details are gone. Navi is totally blue or just turn into a block. Does anyone know how to solve this problem. It would be greatly appriciated, Thanks.

JuSt_BasIc said:

have you updated your graphic card drivers?or buyed a new one?just unninstal and install an updated driver. sorry for my english im portuguese lol. if you dot understand just talk

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Thanks a lot, i'll try it out.