My Windows 11 PC has an unusual sleep and wake problem. The system uses a Ryzen 5 8600G, 16GB of DDR5-5600 RAM in a 2×8GB configuration, integrated graphics, a Cooler Master 550W Bronze V3 power supply, and an unspecified motherboard. During normal use and gaming, everything works correctly. However, when I select Sleep, the computer appears to shut down completely, although some motherboard lights may remain on. Pressing the power button starts the fans, but the monitor reports No Signal and the keyboard and mouse do not seem to wake the system. I usually have to hold or press the power button to shut it down again, then press it once more before the PC boots normally and displays an image. On one occasion, the computer powered itself on automatically after I switched the wall power off and back on. Could this be caused by a BIOS, ACPI, Modern Standby, display-driver, motherboard, or power-supply issue? What troubleshooting steps should I try?
2 Answers
This sounds like a sleep-state or Modern Standby problem, which can sometimes happen with newer Ryzen integrated-graphics systems. Start by updating the motherboard BIOS, since firmware updates often improve AM5 sleep and wake behavior. Also install the latest AMD chipset and integrated graphics drivers. You can additionally disable Windows Fast Startup under Control Panel > Power Options > Choose what the power buttons do, if that option is available. If Sleep remains unreliable, test Hibernate or temporarily disable sleep to see whether the rest of the system stays stable.
The Fast Startup checkbox may not appear on every system or power configuration, so it’s normal if that particular option is missing.
The automatic startup after restoring wall power is probably controlled by a BIOS setting rather than a faulty power supply. Look for an option such as Restore on AC Power Loss, AC Back, or After Power Failure, and set it to Stay Off if you do not want the computer to start automatically. The setting may currently be Power On or Last State, which can cause the PC to boot after power returns if it was considered active when power was removed.
Thanks, I’ll try updating the BIOS and drivers first.