Hello Diane,
Thank you for posting your query on Microsoft Community.
With the issue description, I understand that you are getting a blue tint on one of the two monitors on your Windows 8 machine. I will certainly help you in getting this issue fixed.
This issue might occur due to improper connection or incompatible/corrupt display adapters. Make sure that the connection of the cable connection is not broken.
Let’s follow below mentioned steps and check if that helps:
Method 1: Hardware and devices troubleshooter
The built-in hardware and devices troubleshooter can automatically detect and fix most of the incorrect settings and errors that could cause issues with hardware. I would suggest you to run this troubleshooter to check if there is any issue with the display adapter. Refer top these steps:
- Open Control Panel
- Click on Troubleshooting and select the view all option on the left pane.
- Click on Hardware and devices troubleshooter and follow the prompts.
Try method 2, if the issue persist
Mtehod 2:
Step 1: Update the Display driver.
Please follow the steps given below to update the display driver.
- Press Windows key + X key when you are at desktop.
- Select Device Manager.
- Find and double-click Display driver from the left panel to uninstall
- Right-click the device, and click Update Driver Software.
- Select Search Automatically for Updated Driver Software.
Step 2: Update Driver Software from the Manufacturer’s website:
If the issue occurs due to corrupt Graphic/Display Drivers, then you may refer to the manufactures’ website and install the latest Graphic/Display drivers for the device.
Hope this information is helpful. Please write back to us if you need any further assistance, we'll be glad to assist you.