I have a Dell studio XPS desktop computer with windows 7 home premium service pack 1.The processor is an Intel i5 CPU,12gb of ram,64-bit system. I have noticed that recently when I navigate to different screens the web pages will not load up fast until I move the cursor slightly. If I do not move the cursor the page takes forever to load up. I have run scans for viruses and everything comes up negative. I have also changed out the mouse but it still does the same thing. What would cause this and how can I fix the problem. Thanks for any advice.