Rebooting is not the same as BSOD crashes to be clear.
Can you verify that the PSU can handle the replaced equipments?
Please post a photo of the 3.3v, 5v and 12v in the BIOS.
Please fill in your system specsPlease follow this tutorial and download the tool. The tool will give you detailed information about your system specs, please fill in your system specs more completely including the PSU and cooling.How to fill in your system specs:
I mean, does it give enough power?
You can replace the PSU, but if it doesn't give enough it is useless
Is the OP using the win 10 Netflix UI app or a browser to play Netfix ?
Sometimes the Netflix UI app is unstable and closes or hangs but no BSOD or re boot happens it just hangs or closes and at the worstb you can log out /log into your session and re start the app without a re start .
Any unusuall processess or malware running when platong a video Task manager (even beter) >,Auto Runs or Procman are good tools along with a Malwarbytes scan .
OP might look in installed programs for a funky video player or something like that from a torrent site ?
Edge can be unstable also but it wont cause a re boot when it hangs . Best bet for Netflix is IE 11 it supports 1080P Netfix eyefinity encodes chrome is limited to 720P on Netflix .
I would also suggest the OP use VLC to play video files or DVD's How is it on You Tube in a browser ?
Is the CPU fan working and how about the CPU thermal paste too much /too little or wrong kind ?
OTOH if it runs prime 95 those are probably OK .
OTOH it could be a driver issue mighb look at the windiws installed upate history in C.P. not update setings and see if it updated some drivers sometimes it picks the wrong ones or just re install some new sound and video drivers from the vendors or MB vendor .
I would think its more software at point though and the 3.3 and 5V ( to the board ) can vary anyway within tolerence by as much as almost a volt on the 5V rail or .5 V sometimes on the 3.3 V rail same for TV's
OTOH if there is a bad VR or electrolytic overvolting /undervolting somewhere it could be either the PSU or MB .
Lastly OTOH if it runs prime 95 torture test the voltages are probably OK though that will stress it more than 1080p video in a minute .
@copracr, please post a photo of these values.