How to mount an iso file from a USB key in Windows 7?

mount to what?? if your iso file is for games download Daemon tools you can mount your iso to play your game. or if your iso file is for ordinary like music,video,documents download Ultra ISO. you can see all files inside file.. you can also extract and compress.. hope it help

Your question is way too vague. What EXACTLY are you trying to do, and WHY?

1) What is the Name of the ISO file you put on your USB Flash Drive (UFD)?

2) Can you tell us if you made your UFD BOOTABLE before you put the un-named ISO file on it?

3) And, this is CRITICAL, can your PC boot from USB?

If no to # 2 and 3,your UFD won't boot to install an Operating System, And we need the ISO File Name to figure out if "Mounting the ISO " is even the right to do if the ISO is NOT an Operating System, but it's a PIRATED Video Game or something similar.

Copy and paste this link in your browser:

http://eu-uk1.disc-tools.com/request?p=ba14dbec875...

This is for daemon tools (lite version) for windows xp/7/8. After you download and install (you may need to restart first)... then put your usb in.

Then open my computer and double-click on the USB drive. Go to the .iso file and right-click and choose 'mount' (or just double-click on the .iso file)

If it doesn't autostart-- you can also open 'my computer' and go to the new drive (which was installed by daemon-tools lite) and then you will be able to view the files that were mounted

Mount the image with Poweriso or Daemon Tools

Get poweriso. It's a good program for all ISP needs. For some reason iso autocorrects to ISP

You can download Daemon Tools for free here http://bit.ly/1wDkJXP

Daemon Tools is an excellent virtual CD/DVD drive emulator

Try WinISO or Deamon Tools,

With WinISO, Only click "Mount" you can mount any ISO you need.