Both GPU's were running BF4 when my computer shut down. The 290 produced an obvious burn smell from the power connectors so I wiped my drivers and used onboard video for a month. I retrieved my old Diamond 7870 and installed fresh drivers, of course, it ran flawlessly until suddenly my PC shut off and now will not recognize the GPU (no signal).
I would most likely have been running the previous (bugged?) Crimson drivers when the r9 290 failed but I was running the latest version (non-whql-64bit-radeon-software-crimson-16.4.1-win10-win8.1-win7-apr4) when just last night the 7870 failed.
Win 10 64bit
Intel Core i5-3550 @ 3.3ghz
Antec High Current Gamer M 750 Watt PSU
4 X 4GB Kingston HyperX 1600mhz RAM
Hitachi DeskStar 320GB 7200RPM HD)