ok i have a hp pavilion a206x with windows vista. one day i opened my computer to get my memory card that got inside.when i got it i just started messing around with my computer.then when i tried to turn it on it said "disk boot failure insert system disk and press enter" ok i tried to go to setup but i dont know the password.so i put the windows vista cd and boot it.so i put install but in the section that asks in what drive do i want to install vista in, there are no drives it said that it my hdd might not be responding. so do i need to buy a new hard drive or what??