[Mr.Monkey]

Thank you all for your suggestion

what is Windows license it serial key of activation on windows 8 64-Bits?

if yeah then i have Own Serial key of Windows 8 64-Bits so i'm able to use it?

Not really. If your provider allows ISO installs, then, you could upload a Windows 8 install ISO that matches to your Key but could very well be against Microsoft's TOS or even your provider's own TOS. You need to ask.

If all they offer are template installs of "Windows", most probably your key will not work as it needs a matching Windows version key, and these templates bundled with the control panels of many KVM machines have Windows Server installs only.