Both of the drivers named are installed as part of the Windows 10 installation.

If I right click either of them, new drivers are available for both through Windows Update which caused my second...

AMD Radeon HD 7800 Series [Dated 21/08/2015 - Installed by Win 10 during setup]
Qualcomm Atheros AR8151 PCI-E Gigabit Ethernet Controller (NDIS 6.30) [01/14/2013 - Installed by Win 10 during setup]

It's clearly driver related - even after a clean install, I only updated two drivers using right-click update this driver online from within driver manager and I ended up with another problem.

The...

Although I didn't get to the bottom of what was causing the issue, a clean install of Windows 10 has resolved the problem for me. If as I re-introduce my apps I find the culprit I'll update the...

By using a file compare utility and cleaning up the results I can see the attached differences between Safe Mode and Safe Mode with Networking.

Not sure if driver differences explains why auto...

Thanks - will give that a go now, then if that fails I'm going to put a new HDD in and do a clean install of W10 to see if it's there from the start or from something I've done since installing.

Something that is very interesting is that whenever the PC is at the Windows Logon screen waiting for a password it will sleep just fine regardless of the mode.

If I boot into Safe mode power...

Thanks for taking the time to reply but unfortunately I've already tried everything listed.

I can confirm however that whilst a Safe Mode boot gets power management working again, a clean boot...

Glad this is fixed for you but as stated in my opening post - disconnecting all hardware other than the HDMI and power lead was one of the first things I tried with no success.



This was my...

Have tried removing as many 3rd party apps as possible and still not working :(

Hi and thanks for the reply.

System specs are:

Custom PC
Intel i5 3570k @ 3.8ghz
16GB RAM
Gigabyte MB
AMD Radeon HD 7850
128GB SSD OS Drive

I've seen lots of threads about similar issues here and I think I've tried everything I've read but nothing will make my PC sleep. It worked fine with Windows 8.1 but since 10 it doesn't matter what...