I have an IP Office 500v2 R7 with 2 Combo Cards and a DS8 that crashes a few times a day. All the phones go out and all the lights on every board goes solid red. A reboot gets it back up and I am seeing no alarms before or after the crash/reboot. I have seen that this may be an SD card issue, but I resolved a previous SD card error by removing and reseating the SD card. I am at a loss at what to do next.