Thanks you guys - I will try that.
On the workstation
I have 2 adapters and I'm only using 1. I'll figure out which is which and disable the one I'm not using.
On the laptop
I have 2 adapters and I'm only using 1. I'm not using the wireless adapter so I will disable that.
re: my network (if I understand the term) - I have a Homegroup with those 2 computers on it, which are both wired to a router. I can share files between them no problem. There's also a 3rd computer
that's not part of the Homegroup. It receives a wireless signal from the router. It belongs to someone else in the house.
I honestly don't know
if I'm using Wake On LAN (networking confuses me as you see). I don't think so, I can't think of a need for it. I just want the Homegroup to function properly (which it is) and to be able to put the workstation to Sleep.
On both adapters in the workstation "Shutdown Wake-On-LAN" is enabled. Is that the the one I should disable?
There are no other WOL settings except for a "WOL & Shutdown Link Speed," which is set to "10Mbps First." "Wake on Magic Packet" and "Wake on Pattern Match" are both enabled. "Network Address" is "not present" on both.
Network Adapters (drivers
Workstation: RealTek PCIe Family Controller
Thanks for your help you guys. Oh btw I tried closing everything before going to Sleep mode but I got the same results - OS sleeps, the monitors go dark but the fans keep spinning. Thanks again for your suggestions - can you clarify the "Shutdown Wake-On-LAN" thing? Thanks a lot!