00:27:00:658   890   GPU 2, GpuMiner dk2a failed -4
00:27:00:820   ba4   GPU 2, GpuMiner dk2an0 failed -4
00:27:00:831   9dc   GPU 2, GpuMiner dk2an0 failed -4
00:27:00:839   83c   GPU 2, GpuMiner dk2an0 failed -4


Any ideas?

280x,win10 x64.