Green, red pixels or dots appearing on screen

[Elle27]

This is a newly bought unit. To my surprise while I was doing emails these green dots or sometimes red dots started appearing but it will go away after a fee seconds or when i move the cursor. When i saw this i immediately had it exchanged to a new one thinking it might be a defective unit.. but while i was using the newly exchanged unit, same issue happened! 

processor is AMD ryzen 7 3700U with Raedon Vega Mobile gfx

what should i do? Is this a defective unit again? Any way how to fix this? The issue is really annoying since it appears randomly. 

 

[Riddle_Decipher]

@Elle27 Due to the current global COVID-19 situation, we're seeing an influx of customers coming in for support and we appreciate your patience.

That said, here's what you need to do, to identify the issue and resolve it accordingly:

• If not done already, check if it works fine on the BIOS screen to identify if it's either a hardware or a software issue:
  • If it works fine on the BIOS (Accessed while tapping F10 during a restart) it's a software issue & I suggest creating a new user account to check if that works better, for starters)
  • However, if it doesn't work within the BIOS either, I'm afraid it's a hardware malfunction.

While you respond to that, I have a few more steps that should help: 

Perform a power reset (no data loss) using these steps: Click here, proceed to next step if this works

Attempt to run a test from the HP hardware diagnostic tool, using this link: Click here for details.

If the issue appears on the diagnostics, it could again, determine a hardware failure,

If they don't appear on bios & the hardware tests passed: please update the BIOS & Chip-set drivers from the HP website using this link: Click here

if the issue persists, reinstall windows using the recovery partition or the recovery media to fix the issue,
use this link for details on performing the recovery: Click here

P.S: Welcome to HP Community 😉

Let me know how that pans out,

If you feel I was helpful, simply click on Accept as Solution to help the community grow,

That said, I will have someone follow-up on this to ensure you've been helped,

Just in case you don't get back to us, 

have a good day, ahead.