Screen Flicker rapidly After minimize

Recently sometimes after i Minimize guild wars and try to maxminize it it just flickers my screen repiditaly black to desktop and i have to shut down. any repairs for this and i have jsut did the - repair and the - image and it's only jsut started.

If it just started, it could be bad ram or video card. Clean inside your computer and remove all dust. You can remove the dust with compressed air. That method is for overheating. If it is still happening, run a RAM test and see if you have any faulty parts in it.

This goes in Technician’s Corner by the way.

EDIT:
To check your temperatures to see if your overheating, download this app:
www.lavalys.com

To test your RAM, download this app:
www.memtest86.com

Try reinstalling and or updating your graphics driver and make sure your Direct X version is up to date. If this doesn't help, try and see if the computer is overheating - run a program like speedfan (google) - if it is, see if there is too much dust in any vital air flow spots that might be choking the system of cool air intake.