Its gotta be something in startup that's hanging. I would disable whatever you can in task man under the startup tab (whatever you recognize anyway, I wouldn't disable something if you dont know what it is).
You also should not have heat with the lid closed. HDD Noise is a little concerning. I have my G752 right next to me and have never heard the 1TB HDD. I can feel it from the palm rest, but never heard it.
(ROG has simply become too expensive compared to the competition with same specs... 😞 )
MSI GE75 Raider 10SGS - i7 10750H - RTX 2080 Super - 32GB Ram - 1TB WD NVMe - 2TB 960 EVO - 300Hz 17inch Display
RETIRED: ALIENWARE R17 R5 - i7 8750H - GTX 1070 @ 1.9Ghz - 16GB DDR4 - NVMe 970 EVO 1TB - SSD 960 EVO 1TB
SOLD: ASUS G703VI-XH74K, RETIRED: ASUS G752VY-DH72, RETIRED: ASUS G750JH DB71 , RETIRED:ASUS G74Sx DH72