Hoping someone recognizes this. I have an MX850 that I have been using for years with a receiver, projector, STB and DVD. I have recently installed an HTPC with an HP Media Center infrared receiver. The remote with the HP works great with both XBMC and WMC. However, after learning the codes from the HP remote, the MX850 behaves in strange manner.
Specifically, when I select the left arrow, I can only navigate left once. After that, I can navigate back to the right using the right arrow but I cannot navigate any farther left. Additionally, once I have navigated to the right once with the right arrow, I can only navigate back to the left. Same goes for up arrow and down. This behavior is the same both if I use the RF/IR blaster transmission of the MX850 or if I point the MX850 at the IR receiver and use IR directly.
Not sure if this is something to do with the MX850 or Windows as the symptoms don't make any sense. It's not like transmission is spotty - if I select any other key, the response if 100% reliable.
Anyone out there seen this kind of behavior or have ideas on what might be going on?