I am to say the least surprised that this installation was activated. Do you still have Windows 8.1 installed on your XPS 8700? Microsoft went to great pains to make it impossible to use a OEM installation media to install the operating system on a second computer. The rule is One installation on One computer with OEM installation media. If this was a retail version you could remove the installation from one computer and legally reinstall the operating system on another computer.
I would suggest doing to things, run a sfc /scannow and do a Refresh.
Please run System File Checker.
The sfc /scannow command scans all protected system files and replaces corrupted and incorrect versions with correct Microsoft versions.
Important: There will be a short message at the end of the scan informing you of the results. If you receive the message "no integrity violations were found" you don't need to do anything else, no corrupt files were found. You should watch the scan to see the results at the end of the scan.
You should not do anything else with the computer while this scan is running. Do not stop the scan as this can damage Windows files.
If you are prompted for an administrator password or for a confirmation, enter the password, or click Allow.
This needs to be run using an Administrator account.
Press the Windows key and the R key to open the Run box.
Type cmd in the Run box, press the following keys together to run the Command Prompt as an administrator.
Shift, Ctrl, Enter
Copy and paste the command below in the Command Prompt, then press Enter.
This scan will take a while to run, please do not abort the scan as this can result in damage to the operating system.
If integrity issues are found in the scan please post the CBS log using the instructions below.
To find sfc /scannow log click/tap on File Explorer, select the drive which Windows is installed on (this usually is the C: drive), click/tap on Windows, then Logs, then CBS. If there are more than one log you can identify the log you want by the date and time it was run.
Copy and paste the log at the host website I've suggested below.
This log usually is very large, for this reason you should use a host website like Dropbox to post the log. You can start a free 30 day trial. Once you have loaded the log at Dropbox post a link to the website.
How to do a Windows 8.1 Refresh.
A Refresh basically will reinstall the operating system, this will not affect your personal files if you use the option to save them in the instructions. The downside is that this will uninstall all of your third party programs you installed. Windows 8.1 will place a list of removed apps on your desktop after refreshing your PC, I would suggest that you copy this list for a reference when you go to reinstall these programs.
Press the Windows key and the I key to open Settings.
In Settings click/tap on Recovery, click/tap on Refresh your PC without affecting your files, then Get Started.
You will see a page titled [b]Refresh you PC, click/tap on [b]Next. On the next page click/tap on Refresh.
The computer may turn off and back on during this process, you don't need to do anything. The scan will display a percentage of its completion.