RAB124

at random times, I will get either a white screen of death, a blue screen of death, or a black screen of death. Nothing works, except to turn computer off and then turn back on. Is this a sign of hard drive failure? Operating system:Windows Vista Home Premium (32 bit) Service Pack 2 System root: C:\Windows Available physical memory: 2939 MB CPU: Intel® Pentium® Dual CPU T3200 @ 2.00GHz Drive Info: C: 147.58 GB Internet Explorer: 9.0