problems with amd gpu on early 2011 macbook pro

hey

been having problems for the last couple of weeks on lion os and now mountain lion and need some advice

i'm guessing its the graphics card a amd 6750m as when it swithches to the gpu the screen glitches and freezes, ive tried the apple hardware test and it passed that

then i did a gpu test with a novatech bench test and crashed nearly straight away

it's nearly 2 years old and out of apple warranty but i'm sure under EU law it should be 2 years

whats my options

cheers