win 10 64 bit

ultra deep color , hdr , what ever your tv calls it when turned on using pc and tv as monitor , causing no boot on pc / no signal on tv

problem i was having

lg 43un7300aud to pc running at 4k 60hrz ultra deep color on through tv on rx470 , works perfect until i turn off pc , when i turn on pc again i get no signal until i turn off ultra deep color and restart pc

fix go in to bios and change boot mode from uefi to uefi + legacy