Why on the video card when the load disappears the picture?

On the desktop rarely lost every 10-15 min, but cost only loading the gpu (DotA with different graphics settings from low to high )immediately after 1-10sec goes blank, then returns in 5-10 seconds, and it repeats periodically.
Video amd 6950
the problem is not dependent on OS, and ubuntu 16,04 win10 and everything also
the gpu temperature is not higher 65градусов.
tried to reduce frequencies to a minimum - it had no effect
the error message video driver is not displayed.
July 8th 19 at 12:14
1 answer
July 8th 19 at 12:16
Maybe the capacitors are swollen? Maybe somewhere a bad contact and when heated leaves. Hand over in repair to "warmed".

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