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Estorehf's avatar
Estorehf
Brass Contributor
Jun 24, 2026

To completely reinstall Windows 7 from USB drive, I need help!

Hi, guys. I have a USB drive with Windows 7 installation files, but I cannot figure out how to boot from it and I am worried I might delete everything on my hard drive by mistake. I have already tri...
C-csxm's avatar
C-csxm
Copper Contributor
Jun 24, 2026

Remember, Microsoft no longer supports Windows 7, If you get some error when you completely reinstall Windows 7 from USB. A very common error during a Windows 7 USB install is "No device drivers were found" . This happens because Windows 7 installation media doesn't have built-in drivers for newer hardware like USB 3.0 ports.

1. The Free Fix: Use a USB 2.0 port on your computer. These are often black, while USB 3.0 ports are blue .

2. Another Free Fix (if available): Some computers allow you to disable USB 3.0 functionality in the BIOS to make the ports act like USB 2.0. Look for a setting called "USB Debug" or something similar in your BIOS and try enabling it . This forces your system to use older, compatible USB protocols.'

Once you've fixed the boot issue, next you are able to completely reinstall Windows 7 from USB. here's how to safely perform the reinstall:

Restart your PC, press the boot menu key (try F12 again, or another key like F10 or Esc), and select your USB drive from the list. When the Windows 7 installer loads, you'll get to a screen asking for Upgrade or Custom (advanced) . You must choose "Custom (advanced)" to do a clean install. This is also known as a clean install, which wipes the slate clean.