I have a Windows 7 Premium installed from an upgrade disk. Also have a X64 bite version of Win7 disk. My question is can I change my motherboard with an Intel base cpu and use the X64 Win7 and the product key, which is valid for both? 
My Computer
At a glance
Windows7AMD Athlon 64 X2 52004 GNvidia Geforce 9500 GT
- Computer Manufacturer/Model Number
- custom build
- OS
- Windows7
- CPU
- AMD Athlon 64 X2 5200
- Motherboard
- Asus
- Memory
- 4 G
- Graphics Card(s)
- Nvidia Geforce 9500 GT
- Sound Card
- built in
- Monitor(s) Displays
- LG 20 LCD