I am working on an older Dell Latitude CPi A-Series, and when i boot it up, it sits at a completely black screen with no hard drive activity at all for about 2 or 3 minutes then it boots to windows just fine, there are no errors in the event viewer and after the computer boots it acts like nothing is wrong... i only have an antivirus set to load with windows, i checked for viruses/spyware, any ideas what is causing this?