How to hack/glitch through a Windows Work Computer? (Details)?

I work at a call center at a law firm (Ironic huh?) and I was wondering if anyone could help me out with an issue regarding the work computers there. Life is slow in the call center and they have the operating system pretty locked up. Whenever you try to run something like [Windows Key + R], this sort of thing pops up: How to hack glitch through a Windows Work Computer Details

There's a flaw in the system however. Whenever I plug in a USB drive for the computer to access, they've tuned it to the point where the computer won't recognize the USB drive. However, when I plug in my iPhone to charge, an explorer window pops up asking if I would like to view the files on the device. Apple keeps the files on their products pretty hidden. So the system will only let me view the photos I have on my device. I tried to find the specific folder where the pictures are shown but I've had little to no luck at all. I was looking for the folder to put in a portable web browser that I could have dragged into the documents folder of the work computer and I could have accessed on a daily basis whilst being sneaky. I can't use the command prompt and I can't view files in the hard drive of the computer as this message pops up when I try to access the "C:" drive: How to hack glitch through a Windows Work Computer Details

Basically does anyone know of a way that I could maybe try to sneak a portable web browser onto the documents folder of the computer. The system runs Windows 7 pro. I can't use the run program, control center, ect.

The computers where you work are NOT there for your personal enjoyment, thus they have blocked most attempts at "modifying" them or similar… Play with your own PC at home and don't try to screw up the system at work… It could result in you being fired!

Do you want to be fired for mis-use of work property?
Even if you do manage to break the work computer, the Internet access will be managed, tracked and monitored. Your Manager will know what you are doing within 30 minutes of you doing bad things.