Our unit 2 HMI reboots several times per day. We've traced it to obsolete mother board. We've cloned our unit 1 HMI hard drive & installed in our GE historian (same PC type & mother board as HMI). We installed historian PC with cloned hard drive on unit 2. We verified the unit 1 & unit 2 files on F drive were the same on both HMI's. Do you see any problem with this? We tried it for a couple hours & everything worked fine. Both HMI's are connected to MKV via Arcnet card. The unit 2 mother board was replaced several years ago & I was unable to get windows to start with that hard drive when we installed it in the historian for testing.