My pc that I built a little over 11 months ago just recently (in the last week) began having CPU Overheating problems. Usually happens while playing games such as Valorant or Minecraft, however it has happened while simply watching YouTube. I've tried a few things that google suggested including reapplying thermal paste (Which i tried twice), clearing the fans of dust, as well as replacing the CPU Cooler entirely. Yet, I still am experiencing this issue. It will reboot itself, cycling the boot until I assume the CPU gets cool enough for it to be safe, and then it'll turn itself back on. This has happened over 25 times throughout the past ~5 days. I have a Ryzen 5700x. The original CPU Cooler was the Corsair H100i RGB Pro XT and the cooler i replaced it with is the DeepCool LS520 SE and both of these coolers were 240mm. If anyone has any idea how I could fix this, I'd really appreciate some help. Zero overclocking attempted.
Spec list:
Ryzen 7 5700x CPJ\U
MSI B550 Gaming Edge Wifi
DeepCool LS520 SE CPU Cooler (brand new less than 24 hours of use)
1x Corsair Stock Fan
3x Corsair iCUE SP120 RGB fans
2 1tb SSD
EVGA GeForce RTX 3080 FTW3 Ultra
Corsair 4000D Airflow