Need to reinstall Window 7

My desktop computer crashed, wiping out the MBR for Windows 7. I have lost the installation disk but have the OEM serial number. The guy who built my computer died a couple of years ago, so I can't get another dopy from him, however, I do have the ISO on my backup drive. I entered my serial number on the Digital River website and they told me to seek support from the original OEM manufacturer. Not possible, obviously. I have (had?) a dual boot system with XP, but XP no longer lets me do much. I can't even move a file from one place to another, so there's no way to copy it to a flash drive using Windows XP. So here's my question.

Is there a way to copy a large file like an ISO from one drive (a backup partition on the same computer) to a flash drive without entering either XP or Windows 7 (which can't be booted anyway)?

Failing that, is there a safe place to buy and download Windows 7 without paying through the nose?

As you have an Iso, copy it to a USB (min 16GB) devise and your good to go

You need to go into your Bios options and select USB as your primary boot option.
THEN

SHUTDOWN >PLUG in your USB > Restart> it should then use your external media as a new installation version.

Your Validation key which you should NOT have told anybody should be either on the side of your comp or on the box from which your "guy" set up your comp.
If you do not have either of the above then you will have to use a key finder programme.
IT IS NOT the one shown on your system details am i activated screen.
>>>>>> do this first or you will not ba able to activate your install <<<<<<<<<<<

Roy

Your comp does not really have enough ram for W7, you need at least 3gb.
Certainly not enough for XP and W7, which is why it probably crashed.

You could try Acer support they might send you a >>32bit<< copy of W7 for a nominal fee.

Roy

torchwood said:

Your comp does not really have enough ram for W7, you need at least 3gb.
Certainly not enough for XP and W7, which is why it probably crashed.

You could try Acer support they might send you a >>32bit<< copy of W7 for a nominal fee.

Roy

My desktop is not an Acer; the computer is custom built, and I have 3 hard drives, one of them a terabyte, and I have plent of RAM as well, 4 GBs.

How do I copy the ISO onto a flash drive without using either XP or W7, i.e. safe mode with command line? I can then bring it to my laptop and burn it to CD.

Got the Acer info from YOUR system specs, can you update them.

Easiest way to t/f the data is to hook it up to any other computer and download it from there.

Roy

I've updated the specs to my desktop, but I also have a Toshiba laptop. I'm not sure how to go about hooking it up to the desktop.

My thought was if I could copy it, I could then take it to my laptop and then burn it to disk or make a bootable flash drive.