Recently built a new PC and although i had some hiccups in the beginning with 2 fake SSDs...I sorted that out and the PC seemed to be fine but lately it has been freezing in simple internet browsing. I had a small undervolt and thought this was the culprit but reverted back to factory settings. I am thinking of popping in the windows 11 usb to repair windows? I do play some games and no issues playing... Recently updated the bios to 0830 which is the most recent but still same issues... The cpu runs cool.... never hits above 38c when gaming and browsing it hovers around 32c.
 
The issues are when freezing, the computer just locks up and the screen is frozen, the mouse cursor is still and so is everything else. No codes or numbers on the MB. I need to reset the PC to gain access. Writing this, it locked up once, had to reset it.....lol
 
I forgot to mention I am using Logitech 915TLK keyboard and 902 mouse. When it does lock up, I will try and tinker with those and use them using a cable to see if I lose Bluetooth connectivity
 
Specs....
 
AMD 9800x3d
Corsair h170i cooler LCD
Asus x870 wifi plus bios 0830
corsair dominator DDR5 2x 32GB 6000hz
Asus tuff 4090
Corsair 1500iH
Corsair x7000rgb
AE-5Plus sound card
2 x 990 pro 4tb
1 x crucial 4tb OS 
1 x 870 ssd 4tb storage

Let's remove the fact that I thought it was Bluetooth connection because I remember going on YouTube and my cursor is pointed on a small box highlighting a video and hearing sound then I hear no sound...that is where I know it locked up.....windows is up to date.... will have to check for browser having hardware acceleration ON. Using factory windows Edge.

Will try your suggestion on WhoCrashed

Sajin
Sounds like a power state issue. Disable all power saving features to see if that fixes the issue.

will check but last time I did, I'm sure I clicked performance settings