Why Does My Expensive OLED Monitor Show Disgusting Green and Purple Colors After Windows 11 Update?

How Can You Stop Windows 11 From Ruining Your Premium OLED Display With Terrible Color Distortion?

I've been helping people fix this exact problem for weeks now. The Windows 11 update KB5058499 broke something important for OLED users, and I want to share what actually works.

When you turn on your computer and see everything tinted green and purple instead of normal colors, you're dealing with a Dolby Vision bug. This happens because Windows forces Dolby Vision on every time you restart, even when you've turned it off.

What Causes This Problem

The trouble started with Windows 11 update KB5058499, which was supposed to make HDR better but ended up making things worse. If you have an LG OLED monitor like the C2, C3, or G4 connected to a computer with an NVIDIA RTX graphics card, you're probably seeing this issue.

Here's what happens: Windows automatically turns on Dolby Vision when you start your computer, ignoring what you set in your display settings. Your expensive OLED screen shows brown, dim, washed-out colors until you manually fix it again.

Quick Fixes That Work Right Now

Solution 1: The Fastest Solution

Press Win + Alt + B twice after your computer starts up. This keyboard shortcut toggles HDR settings and fixes the color problem instantly. You'll need to do this every time you restart, but it only takes a few seconds.

Solution 2: Manual Toggle Method

Go to Settings > System > Display > HDR and find the Dolby Vision dropdown menu. Change it from "Use Dolby Vision" to "No" or turn off the toggle completely. Like the keyboard shortcut, this works temporarily but needs repeating after each restart.

Advanced Solutions for Persistent Issues

Solution 3: NVIDIA Control Panel Fix

Open your NVIDIA Control Panel and go to Display > Change Resolution. Under "Use NVIDIA Color Settings," select "Limited" for the output dynamic range. If you see Dolby Vision options here, turn them off completely.

Solution 4: Registry Edit (For Advanced Users)

Before trying this, back up your registry first. Press Windows + R, type "regedit," and hit Enter. Navigate to:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\VideoSettings

Look for entries containing "DolbyVision" or "HDR" and set their values to zero. Only do this if you're comfortable making system-level changes.

Solution 5: Remove the Update

If nothing else works, you can uninstall the problematic update entirely. Here's how:

1. Press Windows + I to open Settings
2. Go to Windows Update > Update History
3. Click Uninstall Updates under Related Settings
4. Find update KB5058499 (use the search bar if needed)
5. Select it and click Uninstall > Confirm
6. Restart your computer

This completely fixes the problem but removes other improvements that came with the update.

Why This Keeps Happening

Microsoft designed KB5058499 to give users more control over HDR and Dolby Vision settings. The update was supposed to let you enable HDR video streaming without turning on system-wide HDR, and it added a toggle to control Dolby Vision separately.

The problem is that Windows ignores your preferences and automatically enables Dolby Vision at startup. This particularly affects OLED displays because they handle HDR differently than regular monitors and need specific settings to prevent burn-in and maintain color accuracy.

What Microsoft Says

Microsoft support acknowledges that KB5058499 causes these display problems. They initially recommended uninstalling the update completely, which does work but removes other beneficial improvements. The company is investigating permanent fixes, though they haven't provided a timeline for when this will be resolved.

My Recommendation

For most people, I recommend using the Win + Alt + B keyboard shortcut after each restart. It's quick, easy, and doesn't require technical knowledge. If you're comfortable with advanced settings, the NVIDIA Control Panel method provides more stability.

Professional users who need color-accurate displays should consider the registry modification approach, despite requiring technical knowledge. This method provides the most consistent results without daily intervention.

Until Microsoft releases a proper fix, expect to deal with this issue after every restart. The situation highlights ongoing challenges with Windows HDR implementation, particularly for premium display hardware.