Chosen Solution
My controller will not enter pairing mode, even though the button itself works fine - two other people who had the same problem opened it up and nudged the Bluetooth bit (ribbon, as they described it) back into place which worked for them to solve the issue. Where is the Bluetooth piece on this circuit board? Thanks.
You should look for an answer before asking a question. When I did that, I found this: Dell VRC100-R Daughterboard Replacement That guide will show you both ribbon cables, and tell you how to detatch and re-attatch them to make sure they have good contact. Think. Ask questions, Think more. Act. Hope this helps. —Dave