Hey sorry I took so long to reply, i've not had chance to fully fill out the system specs and I did do as you said they were both enabled, but I have found the solution for this

for anybody that has this problem of no sound through their HDMI cable you need to go the intel website and find in the downloads page an automatic scanner which scans the
drivers and checks if they're up to date update your drivers and in one of them is a HDMI sound
driver, after they are installed your laptop restarts and when it starts up sound is going through the tv