Since it worked on your XP computer, then it sounds like something is definitely wrong with your Win7 computer.

If this were my computer, I would look at doing a few things. The first thing I would do is to take an image of my C: drive (I use Acronis True Image which costs, but you can also use Macrium Reflect Free), because if anything happened otherwise, I could at least get back to there (broken as it is).

I would then try to do a Windows 7 repair to see if any missing files could be replaced. You can download the media from Microsoft (for Windows 7, 8.1 and 10) here, but you'll have to enter your product key (which should be on a sticker somewhere on your computer).

Barring that, I would consider upgrading to Windows 10 (you probably already have a little icon on the computer bugging you to do it). That will upgrade you to the new Windows, so all the requisite files should be there. Generally, you can start it before going to bed at night and it will be up and running the next morning (it reboots several times during the installation process).

Worst case, you can get back to where you are by restoring the disk image you created above.

Regardless, I wouldn't pay anyone $250 to fix it; get the Win7 installation disk and you should be able to do a repair yourself by following the instructions DGA posted earlier in this thread.


John

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