Why gtx 970 only works in vga mode?

Question

Iron

Hi, I have a problem with my Gigabyte GeForce GTX 970 G1 graphics card. Drivers are no longer installed on it. In the device manager, it is displayed, but the exclamation mark is on, which does not disappear after reinstalling the driver. Cleaned up the registry. When I try to enter gf experience, it gives an error. There are no artifacts on the screen. Now it can only be used in full hd vga mode.

Answer 1

"full hd vga mode" does it mean? did you come up with this mode? )))
Well, in general, the vidyuhi has a chip dump.
I had the same 8800GTX, the chip warmed up and firewood began to be installed and the error in the task manager disappeared