We have a number of machines on our network, laptops and desktops.
We use a specialist system to to issue Wake On Lan Magic Packets to wake all of the machines together. This appears to work fine with the laptops but the desktops don't wake.
We've tried several different machines, all have the correct BIOS settings and Windows Settings as described by their respective manufacturers. All receive the magic packet if we run a monitor on the machine to test prior to sleeping. When we sent the machines to sleep however they do not Wake up On Lan. They do wake up from sleep if a key is pressed.
I believe I have pretty much tried every permutation of setting I can find - any advice?