Radio COM, NAV Flashing - Garmin Stop in fly

Hello

I have a problem with COM radios and Avionics in general, here is what happens to me:

When I fly, after a few minutes, the COM and NAV radios flash very quickly and turn off for a few moments, the avionics like the G1000 or another Garmin turn off completely.
It is therefore impossible for me to make a flight because it also has an impact on the air traffic control tools which detect an off radio.

At first, I therefore emptied all the Community but the result was the same.
So I decided to proceed with the complete uninstallation to start again on an initial installation.

The result was the same. Impossible to fly without COM, NAV and other avionics. Besides, even the VORs reset themselves constantly.

Has anyone had this problem?

Thanks

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