I've searched for days, including reading threads on these forums about the same problem, and have not found a solution.
I made a new build reusing most of my components: Gigabyte 970A-DS3 board, 16GB Corsair DDR III Ram, Radeon 5700 video card, Thermaltake Smaet M820W power supply, hard drives, etc. I swapped these components into a new Cooler Master Silencio 652S case with liquid cooling and a new AMD FX-8370E CPU. The system is not overclocked, it's used for work and photography, not gaming. I've got five external drives connected (two USB 2, three USB 3) all with their own power supplies, two printers, a USB mouse, wireless keyboard, external USB CD/DVD drive, internal SATA CD/DVD drive. I have two 5-port USB 3.0 cards installed.
I did a fresh install of Windows 8.1 Pro and all is running very smoothly except for this maddening problem: the system will not sleep or shut down. Immediately after putting the system to sleep, it wakes up. Immediately after shut down, it restarts. It does do a full shutdown before restarting, the system isn't crashing. Lastwake reports nothing waking the system. I've tried everything, nothing is set in BIOS or Device Manager to wake the system (LAN, mouse, keyboard, etc.). I've left the Home Group, "Turn on Fast Startup" is disabled. I've done everything I could find info for and nothing has solved this problem. The system I had these components in had Windows 8 on it and it was upgraded to Windows 8.1. I didn't have to disable anything in that system like I've tried with the new build. Sleep and shut down worked fine.
Any suggestions are appreciated, thanks for taking the time to read this.
I made a new build reusing most of my components: Gigabyte 970A-DS3 board, 16GB Corsair DDR III Ram, Radeon 5700 video card, Thermaltake Smaet M820W power supply, hard drives, etc. I swapped these components into a new Cooler Master Silencio 652S case with liquid cooling and a new AMD FX-8370E CPU. The system is not overclocked, it's used for work and photography, not gaming. I've got five external drives connected (two USB 2, three USB 3) all with their own power supplies, two printers, a USB mouse, wireless keyboard, external USB CD/DVD drive, internal SATA CD/DVD drive. I have two 5-port USB 3.0 cards installed.
I did a fresh install of Windows 8.1 Pro and all is running very smoothly except for this maddening problem: the system will not sleep or shut down. Immediately after putting the system to sleep, it wakes up. Immediately after shut down, it restarts. It does do a full shutdown before restarting, the system isn't crashing. Lastwake reports nothing waking the system. I've tried everything, nothing is set in BIOS or Device Manager to wake the system (LAN, mouse, keyboard, etc.). I've left the Home Group, "Turn on Fast Startup" is disabled. I've done everything I could find info for and nothing has solved this problem. The system I had these components in had Windows 8 on it and it was upgraded to Windows 8.1. I didn't have to disable anything in that system like I've tried with the new build. Sleep and shut down worked fine.
Any suggestions are appreciated, thanks for taking the time to read this.