Dell Optiplex 755 Windows 7 Fix

#1
I have a dell optiplex 755 usff with an intel core 2 duo and a copy of windows 7 ultimate and the disks for x32 and x64 bit. I can install the 32 bit version of windows but not the x64 bit version to take advantage of my intel core 2 duos x64 bit compatibility with windows. How can I make the system read the x64 disc to install the x64 bit of windows 7. PC specs in photos w/error message.
 


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kemical

Windows Forum Admin
Staff member
Premium Supporter
#2
It sounds like your trying to do an 'upgrade installation' meaning your popping the disk or usb in and clicking install.

This won't work.

To properly upgrade to a 64bit system you need to perform whats called a custom or clean install. This means entering the bios and changing your boot order so that the media you have windows on is first in the boot queue.

How to Reinstall Windows 7 From Scratch
 


#3
I found a way to use a usb stick and it still works but I would like my product key to work on windows 7 still?
 


Neemobeer

Windows Forum Team
Staff member
#4
Just re-enter the product key after the install.
 


kemical

Windows Forum Admin
Staff member
Premium Supporter
#5
Yup, your key works for both 32 and 64bit.
 


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