QUOTE(ley @ Jul 6 2009, 11:05 AM)

Nope PC
Every time i type something in the whole screen flashes.
I would start by updating your video card drivers.
Find out what type of video card you have:
- R-click MyComputer(or "Computer" in Vista) and select Manage
- Highlight Device Manager in the left-hand window
- Click the "+" beside Display Adapters in the right-hand window
- Record which video card you have installed on your computer (Mine is an NVIDIA Quadro FX 570M)
Go to the manufacturers website (ATI/AMD, NVIDIA, INTEL) and download the driver associated with your video card from the support section of the website and install it.