I have a Quick Silver 1.25 CPU with 1.5 GB of ram when i go to certain websites that contain a video ( Ex: Trying to watch a movie trailer/preview ) My QS 1.25 will lock up, causing my mouse to not be able to close any programs or shut down the system and i eventually have to reboot. I believe my system has a 64 GB video card if that makes a difference. Help ????!!!