Unstable rpm cooler gtx 750

THE REGULATORY MOMENTUM.
(because when you first install it 3 years ago, everything worked like clockwork, without any tools)

After installing the graphics driver and output to the desktop, the speed of the cooler at a temperature of 34 °C instantly gain from 0 to 3000 rpm.

After 5 sec. the revs drop to 0 rpm the Interval is about 40 sec.

As soon as I put the video card drivers (different versions) begins the circus.

If you carry the driver noise is absent.

In the case of games more or less demanding momentum of stable and satisfactory noise.

1. 10 Windows 7 back to 10 changed.
2. The thermal grease on the chip changed.
3. The cooler is greased.
4. Dust present.