This morning my hard drive with my operating system fried and I cant repair or even format it for a reinstall. This alone is not enough to stop me from gaming but I can't find the 64 bit CD for windows so I was forced to install 32 version on an old hard drive as a temporary fix. I have valid CD key and what not but without the CD I'm unsure if there is any alternative way to install the 64 bit version without having the CD.

Thanks in advanced for any advice!