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Well I didn't but I had issues booting earlier and then had to do boot linux and remove AMD GPU NVRAM Variable. When I did ls on the /sys/firmware/efi/efivars. I saw opencore variable. But then it was working fine without any issues When I was troubleshooting issues I did face boot chime repeat...

Hello All I have an MBP 15 Early 2011, its was working fine and now when I power on it gives repeated boot chimes. I tried SMC reset and PRAM reset (but my left control and left **** didn't work earlier) so not sure if they worked. Also, sometimes it just boots and no chimes and nothing on...