[quote][b]Posted by:[/b] superbunnie I need help with activating windows. As you know, I have built my PC. What you may not know is that I re-used the HDD from my old computer that has W8 on it. To my surprise, it asked me to activate windows when I first booted up. So I punched in the key and it says that it's invalid because it has exceeded it's activation limit which is apparently a single activation. Do I have to buy a new copy? I tried calling microsoft but the only support they offer is some bull-blam!- automated service.[/quote]Try looking for activation keys or download a Windows activation program. And Wargamer, it could have been your case connectors. That applied to me and after some messing around, I got them working.