Screen "flashes" constantly

[Castellon]

Flashing is caused by something running in the background trying to steal focus.
Biggest culprit is Music Match. Look under the process tab, and see if there is an MM.exe or a MMdiag.exe

 

[Castellon]

Do try it, Did you actually look for those processes? lots of peopel do not even know it is on their system.

Other things like comunication and messageing systems can cause the effect as well.

Basically try ending the processes you are not sure about.

 

[Castellon]

Also make sure you have the latest drivers,