Question My pc will lag for couple of seconds then gets black screen for another couple of seconds

[chaHAHArlie]

• CPU
  Ryzen 5 2600
• Motherboard
  B450m mortar max
• RAM
  2x8 3200mah
• GPU
  Palit 1650 super
• Storage
  250gb ssd kingston + 1tb hdd
• PSU
  corsair 750w 80+ bronze

My pc will lag for couple of seconds it always occurs when I'm working on premiere pro, even if the work is not that complicated there is still times that it will lag then always after that lag i will get black screen but the system unit is on after couple of seconds it will turned on again but when it turned on the program monitor (preview of video) on premiere pro is just black so i have to restart premiere pro for it to be normal again. And there is also times where I experience lag by only just playing on youtube some videos. I've tried replacing my cpu cooler to see if my cpu is overheating from working on premiere pro and after effects but after replacing my stock amd cooler the problem still happens but the temps are better now. What could be the problem of it? Is it a hardware failing?

 

[CountMike]

• CPU
  Ryzen 5 2600
• Motherboard
  B450m mortar max
• RAM
  2x8 3200mah
• GPU
  Palit 1650 super
• Storage
  250gb ssd kingston + 1tb hdd
• PSU
  corsair 750w 80+ bronze

My pc will lag for couple of seconds it always occurs when I'm working on premiere pro, even if the work is not that complicated there is still times that it will lag then always after that lag i will get black screen but the system unit is on after couple of seconds it will turned on again but when it turned on the program monitor (preview of video) on premiere pro is just black so i have to restart premiere pro for it to be normal again. And there is also times where I experience lag by only just playing on youtube some videos. I've tried replacing my cpu cooler to see if my cpu is overheating from working on premiere pro and after effects but after replacing my stock amd cooler the problem still happens but the temps are better now. What could be the problem of it? Is it a hardware failing?

Premiere Pro files stored on HDD ?
Does SSD have enough free space left ?

 

[chaHAHArlie]

Premiere Pro files stored on HDD ?
Does SSD have enough free space left ?

Yes premiere pro files is stored on my hdd, I do have 60gb+ space left on SSD.