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UEFI and Windows 7

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#1 jinaragunlark


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Posted 08 November 2014 - 08:49 AM



So I'm having issues installing 7 on my UEFI PC. I recently got it back from the manufacturer and they upgraded the bios to UEFI and gave me windows 8. After having some major headaches, I decided to say screw that I'm going back to 7.


I was only able to get into the windows setup once, while using legacy. However, the drive would not allow me to install 7 on the partitions because of pdt or whatever it was.


Question: How do I install windows 7 on a uefi system? I have x64 ultimate on a usb bootable.


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#2 JohnC_21


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Posted 08 November 2014 - 09:15 AM

I believe when you mentioned pdt, you meant a GPT disk. You need to delete all Partitions.


Download the bootable version of  Partition Wizard. Burn the iso file and boot the disk. You will need to Disable SecureBoot and Fastboot if using USB in UEFI. If you want to use a USB you can use Rufus to create the bootable iso file. If the USB does not boot, change the partiton scheme in Rufus to GPT in the dropdown box. Delete all Partitions.


Here is a guide on how to get your Windows 7 install disk  USB to boot UEFI.  Or you can enable Legacy boot and disable it after install.

Edited by JohnC_21, 08 November 2014 - 09:16 AM.

#3 jinaragunlark

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Posted 08 November 2014 - 09:50 AM



So the instructions for booting from a usb worked, however, when I went to choose what drives to install windows on, it gave me a blank screen. As in, there were no disk drives to choose from!


This was in UEFI with CSM (?). I switched back to regular UEFI, but it just rejected the USB.

#4 JohnC_21


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Posted 08 November 2014 - 10:19 AM

If you cannot see the drive when installing Windows 7 it may be due to not having the correct Mass Storage Drivers. When installing Windows 7, there will be a windows where with a Load Drivers button in the lower left. I am not sure what the chipset is on this computer. It should be one of the later Intel drivers.


Download the first zip file here.




Unzip it and put the files on the root directory of a USB flash drive. Here is the screen with the Load Drivers option in the lower left. Windows 7 should load the drivers and you should see your drive.

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