x99s gaming 7 won'POST any more; errors 66 67 55 19

rickhan

Distinguished
Mar 10, 2011
6
0
18,510
Worked fine for several years.
No video, no POST beeps, just error LED codes 66 67 55 19
Fans power up
PSU tested OK
Video card worked fine in another machine
Test video card from another machine gets no output

Motherboard gone bad?