Disregard. It appears that my touchscreen driver had died. (That's why the back button worked, but the pen side did not) Restoring touchscreen, then, "fixed" the pen.
Hi. I have a 7306 2n1 that came with a PN771M in its garage. I've been using the pen without issue for a couple of months. This morning, I pulled it from the garage and it was not responsive. It didn't show up as a paired device, so I place it in the garage for a few minutes, re-paired it through system settings > bluetooth successfully. Now it shows paired and connected, battery 100%, but is still not interacting with the computer on the pen side. The rear button, however, works. I have checked the other responses to this question in this forum. The troubleshooting guide not helpful. Any ideas?
PN771M