Hello all and thanks for your help in advance. I babysit a fleet or 100 Dell Optiplex 740's state wide. These units are suppose to be left on and auto-reboot nightly. From time to time a few units won't boot or will be found powered off. In the bios I have enabled AC Power Recovery and also enabled auto power up at 6:00 a.m. as a backup to a power outage/surge/whatever. Is there a list of instances where AC Recovery and auto power up will not work (as a form of self protection?) I haven't tried this yet but should a wake up ping probability fail since the bios isn't waking up in the first place? Any thoughts welcome. Thanks again