Question Pixels on screen and laggy pc

Nov 1, 2023
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Greetings,

I'm currently encountering some issues with my computer. It frequently experiences lag, and I've noticed pixels flashing on the screen. On one occasion, my apps and desktop became unresponsive, although the mouse remained functional. Additionally, I heard a beeping emanating from the computer, but only once, never again.
I'm uncertain about to why the cause is of these problems. Here are the specs:
  • CPU: Intel Core i7-12700K, 5.0GHz
  • Motherboard: EVGA GeForce RTX 3070 8GB FTW3 ULTRA LHR
  • GPU: ASUS PRIME Z690-P DDR4
  • CPU Cooler: Noctua NH-U12A chromax.black CPU tower fan
  • RAM: Corsair Vengeance RGB PRO SL, 2x16GB, 3600MHz, Black
  • Storage: Samsung 980 NVMe 1TB M.2 SSD
  • Additional Storage: 1TB SATA hard drive
  • PSU: Corsair RM850X 2021, 850W, 80+ Gold
I would greatly appreciate any insights or suggestions regarding the possible causes of these issues. I have attached some images as well.

imgur.com/a/6uZoWXp


Thank you.