Lost windows key. I have the disk, its installed on my pc."but i want to re-install"

[Adam Senior]

As title...pc is getting slow. So i want to do a fresh install of windows..and it looks like i have some how lost my windows code. How do i go about getting a new one? i have that key running the windows im on now, and i have the offical disk...just any ideas on how to get a new key? or find out the one im using.

I did buy it from ocuk btw.

 

[Adam Senior]

thanks will try em now