hard drive replacement

I just picked up a used Alienware 17 r2, but the original owner forgot their password. What is the best way around this? I am not sure whether to trust the password cracking services, and I worry that I will loose important system data (like the OS) if I just replace the hard drive. Alienware...

Without vsync on, does using a frame limiter save power if your gpu generates higher fps over the limit? With vsync on, does using a frame limiter save power if your gpu generates higher fps over the limit?

I have an Intel® Core™2 Quad Processor Q8400 (4M Cache, 2.66 GHz, 1333 MHz FSB). If you watch here (http://ark.intel.com/products/38512/Intel-Core2-Quad-Processor-Q8400-4M-Cache-2_66-GHz-1333-MHz-FSB) it says that it support x64 systems. When i bought my pc though it had Vista x32 and also it...

Windows Experience Index was introduced with the release of Microsoft Windows Vista, and was also available in Windows 7. With the help of Windows Experience Index, you can easily assess the available hardware of a computer, and can know which particular hardware device needs to be upgraded in...