amd 7900xt random lost of signal

Hello I've had my 7900xt for around 2 years never had any issues i've always looked after it by settings temps correctly and using aircon in my room when its hot etc etc but recently like last 2 months ive noticed ill be playing a game and then my screen goes black with a lost signal i hear windows sound like i unplugged something so i cannot see the error, i cannot find any errors in event viewer that point to anything relevant, i have found 1 fix that works for around a week but when it crashes again i must go into device manager and then right click on my gpu and enable after the crash, the fix i currently have to do it set my mhz in adrenaline -100 of what ever my base mhz is this is the only fix ive found that works any got any ideas is my gpu dead?