You mean the Windows installation disk, right?
Would that repair it, or reinstall windows on it?
It would have to be the installation disc, and I would have to assume that they are suggesting running a Repair Installation, also known as a inplace upgrade.
Basically what this does is allow you to run the Startup Repair. This is useful when you can't boot into Windows, but from what you have posted this doesn't appear to be the case.
By interrupting the updates you may have damaged files. I would suggest running sfc /scannow.
The sfc /scannow command scans all protected system files and replaces corrupted and incorrect versions with correct Microsoft versions.
Click on the Sart orb and then type cmd in the Search programs and files box.
In the pane above the search box Programs will appear with cmd below it, right click on cmd and choose Run as administrator.
If you are prompted for an administrator password or for a confirmation, enter the password, or click Allow.
A page similar to the one below will open.
Type in sfc /scannow and then press Enter to start the scan. Please notice the space between sfc and the /scannow.
If the scan finds no integrity problems in the first portion of the scan it should stop, to be sure that the scan has stopped wait five minutes, then type in exit and press Enter to stop the scan.
When the scan is finished please post the log of this scan.
To find sfc /scannow log, type cmd in the Search programs and files box,
cmd will appear above the search box under Apps., right click on it and choose Run as administrator, this will open the Elevated Command Prompt. This will look simlare to the image below.
copy and paste the following in the Search programs and files box, then press Enter.
findstr /c:"[SR]" %windir%\logs\cbs\cbs.log >%userprofile%\Desktop\sfcdetails.txt
This will place a new icon on the desktop titled sfcdetails. Click on this to open the log, copy it and paste it in your topic.