Take the graphics card out and carefully use an aircan on it's slot and gently wipe down the contacts of the graphics card with a dry cloth, then reseat it. My old (old old old) Asus board had similar problems because of an el-cheapo case and so stuff didn't fit as snugly as it should, so over time connections would loosen slightly.
E: "Did they... did they just endorse the combination of the JSDF and US Army by showing them as two lesbian lolicons moving in together and holding hands and talking about how 'intimate' they were?"
B: "Have you forgotten so soon? They're phasing out Don't Ask, Don't Tell."
E: "Did they... did they just endorse the combination of the JSDF and US Army by showing them as two lesbian lolicons moving in together and holding hands and talking about how 'intimate' they were?"
B: "Have you forgotten so soon? They're phasing out Don't Ask, Don't Tell."