Seek computer experts

This problem seems to be caused by the graphics card. I suggest you borrow a video card to test the problem. Or you should change a version of the system, such as the installation test of the 64-bit pure flagship version of the 12 constellations Win 7. After the test of these two methods, the problem is basically clear. I would like to buy a good computer, but I don't want to buy a better motherboard. B75 and cpu are a tacit pair. The brand is also very tangled.