I had a samsung hard drive originally in computer. Now have installed a seagate 200gb hard drive. My question is why won't the computer recognize the seagate 200gb? Instead the computer still recognizes the 64 gb samsung hard drive even though it is not installed. Where are all of my gbs? I have run the Flash Bios update that Was recommended by Compaq but after doing that come up with a Check sum issue. Would greatly appreciate any help here.