One thing to try.................
go into color management
search box -> color management
You should see a list of ICC profiles
The best default (unless you calibrate your own monitor) is sRGB IEC61966-2.1
Some default monitor profiles are rubbish which may be your issue??
To add the sRGB profile if it isn't there tick "use my settings for this device" and then hit the Add button. Look through the list and select the sRGB IEC61966-2.1. This will be then added to your ICC profile list. Click on it and hit "set as default profile". Just take note of what the default profile was before and you can go back to it if you want.
As stated before you should be able to tweak you monitor to your brightness/contrast using its manual controls.