WINDOW 8.1 ON SLEEP MODE SHUTS DOWN

Please i have been having issues with my Windows 8.1. I find it very difficult to put my system on sleep mode , when using this boot option my system automatically restarts itself and all unsaved information or documents is lost. How do i reset this options
to it's default.Thanks

Hi olagoke,
Did the issue occur accidently , have you installed any software recently?
First of all, please install the latest drivers for the machine and update the BIOS to check whether the issue is gone.
Apart from this, I agree with the Clean Boot , Device Clean Boot and Powercfg command solutions involved in the link posted by
arnavsharma.
If the issue persists, I recommend you check the Event Viewer to collect some information for further diagnostic.
To check Event Viewer:
Event Viewer \Windows logs \System
Best regards  

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    com.apple.driver.AirPortBrcm43224 700.36.24
    com.apple.driver.AppleAHCIPort 3.0.5
    com.apple.driver.AppleIntelPIIXATA 2.5.1
    com.apple.driver.AppleUSBEHCI 660.4.0
    com.apple.driver.AppleUSBUHCI 656.4.1
    com.apple.driver.AppleACPIButtons 2.0
    com.apple.driver.AppleRTC 2.0
    com.apple.driver.AppleHPET 1.8
    com.apple.driver.AppleSMBIOS 2.1
    com.apple.driver.AppleACPIEC 2.0
    com.apple.driver.AppleAPIC 1.7
    com.apple.driver.AppleIntelCPUPowerManagementClient 217.92.1
    com.apple.nke.applicationfirewall 153
    com.apple.security.quarantine 3
    com.apple.driver.AppleIntelCPUPowerManagement 217.92.1
    com.apple.security.SecureRemotePassword 1.0
    com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.2.7f3
    com.apple.driver.AppleUSBHIDKeyboard 170.15
    com.apple.driver.AppleHIDKeyboard 170.15
    com.apple.driver.AppleUSBMergeNub 650.4.0
    com.apple.driver.AppleUSBAudio 2.9.5f8
    com.apple.iokit.IOUSBHIDDriver 660.4.0
    com.apple.iokit.IOUSBMassStorageClass 3.6.0
    com.apple.driver.AppleUSBComposite 656.4.1
    com.apple.iokit.IOFireWireSerialBusProtocolTransport 2.5.1
    com.apple.iokit.IOFireWireSBP2 4.2.6
    com.apple.iokit.IOSCSIBlockCommandsDevice 3.6.7
    com.apple.kext.triggers 1.0
    com.apple.driver.DspFuncLib 2.6.3f4
    com.apple.vecLib.kext 1.0.0
    com.apple.driver.AppleSMBusController 1.0.12d1
    com.apple.iokit.IOAcceleratorFamily 98.23
    com.apple.AppleGraphicsDeviceControl 3.6.22
    com.apple.iokit.IOSurface 91.1
    com.apple.iokit.IONDRVSupport 2.4.1
    com.apple.driver.AppleHDAController 2.6.3f4
    com.apple.iokit.IOHDAFamily 2.6.3f4
    com.apple.iokit.IOBluetoothFamily 4.2.7f3
    com.apple.iokit.IOGraphicsFamily 2.4.1
    com.apple.iokit.IOAudioFamily 1.9.7fc2
    com.apple.kext.OSvKernDSPLib 1.14
    com.apple.iokit.IOSerialFamily 10.0.7
    com.apple.driver.IOPlatformPluginLegacy 1.0.0
    com.apple.driver.IOPlatformPluginFamily 5.7.1d6
    com.apple.driver.AppleSMC 3.1.8
    com.apple.iokit.IOFireWireIP 2.2.6
    com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.6.7
    com.apple.iokit.IOBDStorageFamily 1.7
    com.apple.iokit.IODVDStorageFamily 1.7.1
    com.apple.iokit.IOCDStorageFamily 1.7.1
    com.apple.iokit.IOATAPIProtocolTransport 3.5.0
    com.apple.iokit.IOFireWireFamily 4.5.5
    com.apple.iokit.IOUSBUserClient 660.4.2
    com.apple.iokit.IO80211Family 640.36
    com.apple.iokit.IONetworkingFamily 3.2
    com.apple.iokit.IOSCSIParallelFamily 3.0.0
    com.apple.iokit.IOSCSIArchitectureModelFamily 3.6.7
    com.apple.iokit.IOAHCIFamily 2.6.5
    com.apple.iokit.IOATAFamily 2.5.2
    com.apple.iokit.IOUSBFamily 686.4.1
    com.apple.driver.AppleEFINVRAM 2.0
    com.apple.iokit.IOHIDFamily 2.0.0
    com.apple.driver.AppleEFIRuntime 2.0
    com.apple.iokit.IOSMBusFamily 1.1
    com.apple.security.sandbox 278.11.1
    com.apple.kext.AppleMatch 1.0.0d1
    com.apple.security.TMSafetyNet 7
    com.apple.driver.AppleKeyStore 2
    com.apple.driver.DiskImages 371.1
    com.apple.iokit.IOStorageFamily 1.9
    com.apple.iokit.IOReportFamily 23
    com.apple.driver.AppleFDEKeyStore 28.30
    com.apple.driver.AppleACPIPlatform 2.0
    com.apple.iokit.IOPCIFamily 2.9
    com.apple.iokit.IOACPIFamily 1.4
    com.apple.kec.corecrypto 1.0
    com.apple.kec.pthread 1
    System Profile:
    Model: MacPro3,1, BootROM MP31.006C.B05, 8 processors, Quad-Core Intel Xeon, 3 GHz, 20 GB, SMC 1.25f4
    Graphics: NVIDIA GeForce GTX 680, NVIDIA GeForce GTX 680, PCIe, 2048 MB
    Memory Module: DIMM Riser B/DIMM 1, 1 GB, DDR2 FB-DIMM, 800 MHz, 0x80AD, 0x48594D5035313241373243503844332D5335
    Memory Module: DIMM Riser B/DIMM 2, 1 GB, DDR2 FB-DIMM, 800 MHz, 0x80AD, 0x48594D5035313241373243503844332D5335
    Memory Module: DIMM Riser A/DIMM 1, 1 GB, DDR2 FB-DIMM, 800 MHz, 0x80AD, 0x48594D5035313241373243503844332D5335
    Memory Module: DIMM Riser A/DIMM 2, 1 GB, DDR2 FB-DIMM, 800 MHz, 0x80AD, 0x48594D5035313241373243503844332D5335
    Memory Module: DIMM Riser B/DIMM 3, 4 GB, DDR2 FB-DIMM, 800 MHz, 0x80CE, 0x000000463732353142363245363830304600
    Memory Module: DIMM Riser B/DIMM 4, 4 GB, DDR2 FB-DIMM, 800 MHz, 0x80CE, 0x000000463732353142363245363830304600
    Memory Module: DIMM Riser A/DIMM 3, 4 GB, DDR2 FB-DIMM, 800 MHz, 0x80CE, 0x000000463732353142363245363830304600
    Memory Module: DIMM Riser A/DIMM 4, 4 GB, DDR2 FB-DIMM, 800 MHz, 0x80CE, 0x000000463732353142363245363830304600
    AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x88), Broadcom BCM43xx 1.0 (5.10.131.36.16)
    Bluetooth: Version 4.2.7f3 14616, 3 services, 14 devices, 1 incoming serial ports
    Network Service: Ethernet 2, Ethernet, en1
    Network Service: Ethernet 1, Ethernet, en0
    PCI Card: NVIDIA GeForce GTX 680, Display Controller, Slot-1
    PCI Card: NVIDIA GeForce GTX 680, NVDA,Parent, Slot-1
    PCI Card: ATTO ExpressPCI UL5D LP, SCSI Bus Controller, Slot-2@2,4,0
    PCI Card: DeckLink HD Extreme 2, Video, Slot-4
    PCI Card: ATTO ExpressPCI UL5D LP, SCSI Bus Controller, Slot-2@2,4,1
    Serial ATA Device: OWC Mercury EXTREME Pro 6G SSD, 480.1 GB
    Serial ATA Device: WDC WD5000AAKS-41YGA1, 500.11 GB
    Serial ATA Device: WDC WD5000AAKS-41YGA1, 500.11 GB
    Serial ATA Device: WDC WD5000AAKS-41YGA1, 500.11 GB
    Parallel ATA Device: PIONEER DVD-RW  DVR-112D
    Parallel ATA Device: PIONEER DVD-RW  DVR-112D
    SCSI Device: SCSI Target Device @ 0
    SCSI Device: SCSI Target Device @ 0
    USB Device: Hub
    USB Device: Keyboard Hub
    USB Device: Microsoft Wireless Optical Mouse® 1.00
    USB Device: Apple Keyboard
    USB Device: USB 2.0 FD
    USB Device: Apple Cinema HD Display
    USB Device: USB2.0 Hub
    USB Device: External
    USB Device: NS1068
    USB Device: NS1068
    USB Device: Hub
    USB Device: FCR-HS219/1 Mobile Reader
    USB Device: Live! Cam Connect HD VF0750
    USB Device: Apple Cinema HD Display
    USB Device: Elements 10B8
    USB Device: External USB 3.0
    USB Device: Bluetooth USB Host Controller
    FireWire Device: built-in_hub, Up to 800 Mb/sec
    FireWire Device: unknown_device, OWC Mercury Elite-AL Pro, Up to 400 Mb/sec
    Thunderbolt Bus:
    Model: MacPro3,1, BootROM MP31.006C.B05, 8 processors, Quad-Core Intel Xeon, 3 GHz, 20 GB, SMC 1.25f4
    Graphics: NVIDIA GeForce GTX 680, NVIDIA GeForce GTX 680, PCIe, 2048 MB
    Memory Module: DIMM Riser B/DIMM 1, 1 GB, DDR2 FB-DIMM, 800 MHz, 0x80AD, 0x48594D5035313241373243503844332D5335
    Memory Module: DIMM Riser B/DIMM 2, 1 GB, DDR2 FB-DIMM, 800 MHz, 0x80AD, 0x48594D5035313241373243503844332D5335
    Memory Module: DIMM Riser A/DIMM 1, 1 GB, DDR2 FB-DIMM, 800 MHz, 0x80AD, 0x48594D5035313241373243503844332D5335
    Memory Module: DIMM Riser A/DIMM 2, 1 GB, DDR2 FB-DIMM, 800 MHz, 0x80AD, 0x48594D5035313241373243503844332D5335
    Memory Module: DIMM Riser B/DIMM 3, 4 GB, DDR2 FB-DIMM, 800 MHz, 0x80CE, 0x000000463732353142363245363830304600
    Memory Module: DIMM Riser B/DIMM 4, 4 GB, DDR2 FB-DIMM, 800 MHz, 0x80CE, 0x000000463732353142363245363830304600
    Memory Module: DIMM Riser A/DIMM 3, 4 GB, DDR2 FB-DIMM, 800 MHz, 0x80CE, 0x000000463732353142363245363830304600
    Memory Module: DIMM Riser A/DIMM 4, 4 GB, DDR2 FB-DIMM, 800 MHz, 0x80CE, 0x000000463732353142363245363830304600
    AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x88), Broadcom BCM43xx 1.0 (5.10.131.36.16)
    Bluetooth: Version 4.2.7f3 14616, 3 services, 14 devices, 1 incoming serial ports
    Network Service: Ethernet 2, Ethernet, en1
    Network Service: Ethernet 1, Ethernet, en0
    PCI Card: NVIDIA GeForce GTX 680, Display Controller, Slot-1
    PCI Card: NVIDIA GeForce GTX 680, NVDA,Parent, Slot-1
    PCI Card: ATTO ExpressPCI UL5D LP, SCSI Bus Controller, Slot-2@2,4,0
    PCI Card: DeckLink HD Extreme 2, Video, Slot-4
    PCI Card: ATTO ExpressPCI UL5D LP, SCSI Bus Controller, Slot-2@2,4,1
    Serial ATA Device: OWC Mercury EXTREME Pro 6G SSD, 480.1 GB
    Serial ATA Device: WDC WD5000AAKS-41YGA1, 500.11 GB
    Serial ATA Device: WDC WD5000AAKS-41YGA1, 500.11 GB
    Serial ATA Device: WDC WD5000AAKS-41YGA1, 500.11 GB
    Parallel ATA Device: PIONEER DVD-RW  DVR-112D
    Parallel ATA Device: PIONEER DVD-RW  DVR-112D
    SCSI Device: SCSI Target Device @ 0
    SCSI Device: SCSI Target Device @ 0
    USB Device: Hub
    USB Device: Keyboard Hub
    USB Device: Microsoft Wireless Optical Mouse® 1.00
    USB Device: Apple Keyboard
    USB Device: USB 2.0 FD
    USB Device: Apple Cinema HD Display
    USB Device: USB2.0 Hub
    USB Device: External
    USB Device: NS1068
    USB Device: NS1068
    USB Device: Hub
    USB Device: FCR-HS219/1 Mobile Reader
    USB Device: Live! Cam Connect HD VF0750
    USB Device: Apple Cinema HD Display
    USB Device: Elements 10B8
    USB Device: External USB 3.0
    USB Device: Bluetooth USB Host Controller
    FireWire Device: built-in_hub, Up to 800 Mb/sec
    FireWire Device: unknown_device, OWC Mercury Elite-AL Pro, Up to 400 Mb/sec
    Thunderbolt Bus:

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