Windows 8 release preview has beenthere on the microsoft official website for free.When you go to the download page you will be provided the product key and just note the key on paper and then download the 32-bit or 64-bit .iso format file according to your system specifications.
PC is a device which starts to become dead after some year.It is the reason when people want to get rid of their old PCs but I have some idea to make it useful and sell it at some preferable price.
First of all,Open the enclosed casing of CPU.
Unplug all power and data cables (Keep in mind their exact position).