Install Windows 7,8 - 64bit - on the UEFI standard

On EFI systems, Windows product key can only be installed to GPT disk while installing Windows 7.8 64 bit version. Hope the following article can help you!
 To experience the fast bootability of Windows 8 - 64bit on UEFI or simply want to reinstall Windows 7 home premium product key- 64bit so that the system get enough 4GB Ram. You put the 64-bit installation disk into the tray and install from DOS but at the select disk drive an error message pops up:
Click on "Show detail" to find out what the error is, then you get the message "Windows can not be installed to this disk. to GPT disk "
 Obtaining this message means that your computer has UEFI boot support (Unified Extensible Firmware Interface (UEFI), which is a more advanced standard and is replacing the BIOS). To install the operating system on the UEFI standard, you need to format it. Restores the hard disk partition structure from the MBR (Master Boot Record) - to the GPT (GUID Partition Table). However, this means that you will lose all the data on your hard drive - note that the "whole hard drive" not just the partition you intend to install Windows. If you read here you rethink the re-installation of your operating system, you can choose one of the following options:
1> Reinstall Windows 7.8 32 bit version. This option means you want to preserve your data, give up the desire to experience the great Windows 8 product key 64-bit boot, or not get enough 4GB Ram.
2> Installing Windows 7.8 64bit non-UEFI. This can help you conserve data, get enough on 4GB Ram, but you can not experience the ability of Windows 8 Boot
To do so, just go to BIOS find the UEFI Boot line from Enable to Disable and install Windows as usual.
3> If you still want to continue to install Windows 7.8 64bit on the UEFI standard, then back up or remove all data on the machine. At the partition selection step, click "Drive Options (advanced)" and then "Delete" all the partitions you have. Then it will show your hard drive (of course not formatted) at this time you press "New" to create and the system will automatically convert to GPT architecture.
The process is quite fast, the system will create more necessary partitions (size only 100MB)
At this point, you can completely breathe and click on the Primary partition to install Windows 64bit as normal.