Try these Windows checks in order:
- Check whether Night light is on. Go to Start > Settings > System > Display > Night light.
- If it is on, either drag the Strength slider to the left or select Turn off now.
- On some HDR-capable devices, Night light can cause a red or pink tint.
- Check whether Screen tint is enabled. Go to Settings > Accessibility > Screen Tint.
- Turn it off, or change the tint color and reduce the tint strength.
- If Color filters are enabled, note that Screen tint and Color filters cannot be used at the same time.
- Calibrate display color.
- Search for calibrate display color in Settings search and follow the directions.
- If the pink tint is only on a Surface Studio, try switching the color profile from the action center and test sRGB, DCI-P3, or Vivid.
- If the tint started suddenly and does not change after these settings, the issue can be related to the display driver, color profile, or the laptop display hardware. In that case, updating or reinstalling the graphics driver and resetting the display color profile are the next checks.
If the problem remains after these steps, that points more to a hardware issue with the built-in display.
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