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PC Not Waking from Sleep

Steve C

Member
Power User
My PC is no longer waking from sleep by pressing a keyboard button which used to work. I have to restart the PC using the power on button - then I get the a critical error Event 41 - The System has rebooted without cleanly shutting down first. I also get error Event 6008 The previous shutdown at .... was unexpected.

I've run SFC /SCANNOW and that's fine, the keyboard is set to wake the PC, USB selective suspend is disabled, the PC is not allowed to power off USB devices and link state power management is off.

I can't think of any other software changes to try. Is there a diagnostic tool or Fixit program to help solve this problem?

My XFX PSU is playing up taking 10-20secs before the +5VSB signal appears on initial power on. Could this be an issue preventing wake from sleep? Note the PC reboots straight away from a failed wake from sleep as soon I press the power on button - but then it logs the errors Event 41 & Event 6008 noted above.
 

My Computer

System One

  • OS
    Windows 8.1 64 bit
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Home Build
    CPU
    Intel i3570K
    Motherboard
    Gigabyte GA-77X-UD5H
    Memory
    16 GB
    Graphics Card(s)
    Sapphire R9 280X Toxic
    Sound Card
    Realtek on motherboard
    Monitor(s) Displays
    Viewsonic VP2770
    Screen Resolution
    2560 x 1440
    Hard Drives
    Intel 520 180GB SSD
    Seagate 2T HDD
    Seagate external 1T USB HDD
    PSU
    XFX 850W
    Case
    Nanoxia Deep Silence 1
    Cooling
    Noctua NH-D14
    Keyboard
    Microsoft
    Mouse
    Microsoft
    Internet Speed
    50Mbps
    Browser
    Chrome
    Country Flag
    UK
    State/Region Flag
    uk yorkshire

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