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How much Ram is there in your machine

If there is only 1gig then the machine will struggle to handle both Windows and video as Windows captures as much as it can when it starts

The more Ram the better

Go to www.crucial.com type in the details of your machine and it will tell you what the maximum amount of Ram it will take.

Go to www.belarc.com and download and run Belarc Advisor , that will tell you how much Ram is in your machine.

I also would look at the video card which has its own Ram built in and that smooths out the graphics as well