My screen has gone pink

[Mintercondition]

intel (R) Core (TM) i3-4005U CPU @ 1.70GHz 1.70GHz

i have both the Device ID and the Product ID

but not sure if you need them both

the product ID 00326-10000-00000-AA781
No changes have been made.

i do not have an alternative monitor.

it is still pink in Bios mode

[Riddle_Decipher]

@Mintercondition Welcome to HP Community!

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

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 within 24 - 48hrs, and have a good day, ahead.

[Majf]

About 2/3 of screen has pink or green  vertical lines.  The laptop passed video and other hardware diagnostic tests. Display adaptor (Intel HD520) is working properly (device mgr), updated drivers and bios (hp support assistant). How to tell if it is the monitor or chip/motherboard or what? Put on a new cable ribbon and no change.

HP Pavilion 15 au020wm  bought in 2017. (out of warranty)

[Riddle_Decipher]

@Majf Does the issue occur on the BIOS screen? or an alternate monitor? If yes, this is a hardware malfunction with the LCD, if not, its most likely an issue with the graphics card or its driver, you may want to reinstall the drivers, followed by resetting windows if the issue persists: click here for steps.

If you wish to thank me for my efforts, you could click on "Accept as solution" on my post as the solution should help others too.