Exchanged my i5 128 SPa3 for the i7 256 yesterday. After installing every update available, I am still not able to connect my surface pen. The driver error message sent me to device manager where I see the dreaded yellow triangle on the touch controller firmware. The system continues to tell me I have the latest driver yet after restarting numerous times I have the same issue. MS support was useless. I tried deleting the firmware, restarting, reinstalling firmware update from MS but the problem persists. I really want this to work for me. Any advice or fix before I return the unit for good? Thanks.