BSOD 0x3b both idle and playing

Hello! Since two days back Ive had some problems with random BSOD. All of them gives the same STOP code: 0x00...03b. Im having a hard time figuring out whats causing it and the hole thing with reading dump files is all new to me. So I would really appreciate if you could help me or point me in the right direction. I think its got to be something with some drivers. Most likely the GPU...