Hi,
Is your USB Flash Drive Windows 7 installation media ?
Did you ever get past the last screen... sometimes it takes awhile...
You are probably going to need to do a boot repair with Installation Media...
Boot Repair...
- Boot with the Windows Installation Media...
- Click "Repair your computer" on the lower left of the "Install" screen....
- Click the "Troubleshoot" or "Advanced" depending upon which appears...
- Select "Command Prompt". (Capital letters not necessary)
- Type BOOTREC /FIXMBR, and then press ENTER.
- Type BOOTREC /FIXBOOT, and then press ENTER.
- Type BOOTREC /REBUILDBCD, and then press ENTER.
NOTE... If you have multiple HDDs\SSDs, it would be best to unhook all except fro the OS drive..
If available, you might select "Startup Repair" before attempting the BOOTREC commands...