hey i m having a prob with my pc.. i have a HD5570 graphics card.. the prob started few months back that my monitor was going black n was again back to normal.. this was happening repeatedly mostly while playing games. . i changed my vga cable.. it worked for few days and then i started to get a new prob which is my monitor goes black n nothing is displaying.. tho power is on in my monitor.. and after a few secs the computer would freeze.. caps lock n num lock doesn't work.. tho processor and everything is running.. i checked without using the gfx card and i am not facing a problem when not using gfx card.. but i noticed when using gfx card a slight movement or any jerk on the cabinet also results in the same prob..i don't understand whether it is the prob with my graphics card or the PCI slot in the motherboard.. can u plz help ?? THANX..