Urgh, not this error again..

[CMDR Cosmic Spacehead]

Annnnd the error is back.
http://mrwgifs.com/wp-content/uploads/2013/05/Excuse-Me-Im-Out-Reaction-Gif.gif

I had this on my R9 280x.

I sold it to CEX and brought a GTX 770, which is near identical in performance. Lol

Problem solved!
(I know, not particularly helpful).

I couldn't tell if it was my R9 playing up/dying or its drivers.