Hi @johnwarner15792
There are 3 settings in BIOS that can turn the PC on automatically.
Here's an image from the Optiplex 780 service manual showing what they are. See the 3 highlighted in green
The 3rd option ''Remote Wake Up'' is only if the PC is connected to a server so that it can boot up i.e. it doesn't have an operating system installed in the PC itself.
[image|3509588]
(click on image)