video card failure

How to check if motherboard is killing video cards? I checked the connectors with a digital multimeter because I had a video card a 760 that came in that didn't work with a graphical glitches in BIOS and startup and gave me a code 43, and actually similar glitches to a r9 290x that died on that...

Hello. My screen started to show tearing and artifacts. It was fine during playing an old game (Worms Armageddon), but after I quit to Windows 10 the artifacts appeared. I inspected the card and saw these: Damaged components I don't know what these are but they don't look good. It's like...