kezza87

Hi Guys, Im having an annoying problem with my R4, I upgraded the GPU about 18 months ago from 660m to 880m and have had no problems at all until recently im getting green pixel type artifacts on the screen from Boot but the strange thing is they only appear when booting with the AC adapter plugged in. If I boot from battery the display is fine. I have tried a different AC adapter (330w instead of 240w) but no difference, Ive changed the CPU, LCD panel, LCD display cable, Re-seated GPU and replaced all thermal pads. Re-pasted both cpu and gpu. Ive also tried numerous different Bios settings on the A11 unlocked bios but nothing seems to make any difference. Im wondering if there is some kind of static build up from the ac adapter causing it so maybe something is faulty on the mobo. so Im wondering now is it a faulty Motherboard or a faulty 880m Gpu? or does anyone have any ideas as to what it could be?