Hello mcamerasc,
Spacefrog is correct in that the default installation does not elevate the priority beyond "normal", so somehow that was manually set for you. You may try to create a new shortcut for it in case IT or someone (somehow) made the process priority elevated through the short cut.
One other method is via environmental variables in Windows, but that's a bit outside my ability to help much with and a tad on the technical side of Windows. You can access your environmental variables by right clicking on "Computer", hitting "Properties", clicking "Advanced System Settings", and it on the bottom of that window there that opens. From there, I can't help much but a solution may exist in there. I would consult the windows help for more information on elevating processes via environmental variables, and just know that I can't do much technical support on Windows functions.
There are a couple links here that *may* help, but again this is beyond the scope of what I can officially support since I have no control over windows development. I'd rather leave you with options that nothing however, so it's a shot in the dark. Please consider these links nothing more than external learning resources about process elevations, and not supported in any official capacity by me.
Wikihow (Article references high priority, but you can use normal as well if it works for you.)
MSDN
ITPro
In the case that you do resolve this some other way, it would be great if you could post your solution here. Best of luck and best regards,