Unreal Engine crashing on launch

Every time I launch UE4 it loads till 45% than it crhases this is the crash log.

Log file open, 09/15/17 09:42:16
LogWindows: LoadLibraryWithSearchPaths failed for file aqProf.dll. GetLastError=0
LogWindows: LoadLibraryWithSearchPaths failed for file VSPerf140.dll. GetLastError=0
LogWindows: LoadLibraryWithSearchPaths failed for file VtuneApi.dll. GetLastError=0
LogWindows: LoadLibraryWithSearchPaths failed for file VtuneApi32e.dll. GetLastError=0
LogInit: Display: Running engine without a game
LogPlatformFile: Not using cached read wrapper
LogInit: Display: RandInit(1102816594) SRandInit(1102816594).
LogTaskGraph: Started task graph with 5 named threads and 8 total threads with 3 sets of task threads.
LogStats: Stats thread started at 3.947284
LogD3D11RHI: Aftermath initialized
LogWindows: LoadLibraryWithSearchPaths failed for file …/…/…/Engine/Binaries/ThirdParty/nvTextureTools/Win64/nvtt_64.dll. GetLastError=193
LogPluginManager: Mounting plugin Paper2D
LogPluginManager: Mounting plugin LightPropagationVolume
LogPluginManager: Mounting plugin CodeLiteSourceCodeAccess
LogPluginManager: Mounting plugin GitSourceControl
LogPluginManager: Mounting plugin KDevelopSourceCodeAccess
LogPluginManager: Mounting plugin NullSourceCodeAccess
LogPluginManager: Mounting plugin PerforceSourceControl
LogPluginManager: Mounting plugin SubversionSourceControl
LogPluginManager: Mounting plugin UObjectPlugin
LogPluginManager: Mounting plugin VisualStudioSourceCodeAccess
LogPluginManager: Mounting plugin XCodeSourceCodeAccess
LogPluginManager: Mounting plugin AssetManagerEditor
LogPluginManager: Mounting plugin AudioCapture
LogPluginManager: Mounting plugin FacialAnimation
LogPluginManager: Mounting plugin GameplayTagsEditor
LogPluginManager: Mounting plugin MobileLauncherProfileWizard
LogPluginManager: Mounting plugin PluginBrowser
LogPluginManager: Mounting plugin SpeedTreeImporter
LogPluginManager: Mounting plugin AlembicImporter
LogPluginManager: Mounting plugin CharacterAI
LogPluginManager: Mounting plugin HTML5Networking
LogPluginManager: Mounting plugin AndroidMedia
LogPluginManager: Mounting plugin AvfMedia
LogPluginManager: Mounting plugin MediaPlayerEditor
LogPluginManager: Mounting plugin WmfMedia
LogPluginManager: Mounting plugin TcpMessaging
LogPluginManager: Mounting plugin UdpMessaging
LogPluginManager: Mounting plugin LevelSequenceEditor
LogPluginManager: Mounting plugin MatineeToLevelSequence
LogPluginManager: Mounting plugin OnlineSubsystemGooglePlay
LogPluginManager: Mounting plugin OnlineSubsystemIOS
LogPluginManager: Mounting plugin OnlineSubsystem
LogPluginManager: Mounting plugin OnlineSubsystemNull
LogPluginManager: Mounting plugin OnlineSubsystemUtils
LogPluginManager: Mounting plugin AndroidDeviceProfileSelector
LogPluginManager: Mounting plugin AndroidMoviePlayer
LogPluginManager: Mounting plugin AndroidPermission
LogPluginManager: Mounting plugin AppleMoviePlayer
LogPluginManager: Mounting plugin ArchVisCharacter
LogPluginManager: Mounting plugin CableComponent
LogPluginManager: Mounting plugin CustomMeshComponent
LogPluginManager: Mounting plugin ExampleDeviceProfileSelector
LogPluginManager: Mounting plugin GoogleCloudMessaging
LogPluginManager: Mounting plugin ImmediatePhysics
LogPluginManager: Mounting plugin IOSDeviceProfileSelector
LogPluginManager: Mounting plugin LinuxDeviceProfileSelector
LogPluginManager: Mounting plugin LocationServicesBPLibrary
LogPluginManager: Mounting plugin MobilePatchingUtils
LogPluginManager: Mounting plugin OculusVR
LogPluginManager: Mounting plugin PhysXVehicles
LogPluginManager: Mounting plugin ProceduralMeshComponent
LogPluginManager: Mounting plugin RuntimePhysXCooking
LogPluginManager: Mounting plugin SteamVR
LogPluginManager: Mounting plugin WindowsMoviePlayer
LogInit: Using libcurl 7.47.1
LogInit: - built for x86_64-pc-win32
LogInit: - supports SSL with OpenSSL/1.0.2g
LogInit: - supports HTTP deflate (compression) using libz 1.2.8
LogInit: - other features:
LogInit: CURL_VERSION_SSL
LogInit: CURL_VERSION_LIBZ
LogInit: CURL_VERSION_IPV6
LogInit: CURL_VERSION_ASYNCHDNS
LogInit: CURL_VERSION_LARGEFILE
LogInit: CURL_VERSION_IDN
LogInit: CurlRequestOptions (configurable via config and command line):
LogInit: - bVerifyPeer = false - Libcurl will NOT verify peer certificate
LogInit: - bUseHttpProxy = false - Libcurl will NOT use HTTP proxy
LogInit: - bDontReuseConnections = false - Libcurl will reuse connections
LogInit: - CertBundlePath = nullptr - Libcurl will use whatever was configured at build time.
LogInit: Build: ++UE4+Release-4.17-CL-3586342
LogInit: Engine Version: 4.17.1-3586342+++UE4+Release-4.17
LogInit: Compatible Engine Version: 4.17.0-3573198+++UE4+Release-4.17
LogInit: Net CL: 3573198
LogDevObjectVersion: Number of dev versions registered: 16
LogDevObjectVersion: Dev-Blueprints (B0D832E4-1F89-4F0D-ACCF-7EB736FD4AA2): 10
LogDevObjectVersion: Dev-Build (E1C64328-A22C-4D53-A36C-8E866417BD8C): 0
LogDevObjectVersion: Dev-Core (375EC13C-06E4-48FB-B500-84F0262A717E): 2
LogDevObjectVersion: Dev-Editor (E4B068ED-F494-42E9-A231-DA0B2E46BB41): 20
LogDevObjectVersion: Dev-Framework (CFFC743F-43B0-4480-9391-14DF171D2073): 28
LogDevObjectVersion: Dev-Mobile (B02B49B5-BB20-44E9-A304-32B752E40360): 0
LogDevObjectVersion: Dev-Networking (A4E4105C-59A1-49B5-A7C5-40C4547EDFEE): 0
LogDevObjectVersion: Dev-Online (39C831C9-5AE6-47DC-9A44-9C173E1C8E7C): 0
LogDevObjectVersion: Dev-Physics (78F01B33-EBEA-4F98-B9B4-84EACCB95AA2): 0
LogDevObjectVersion: Dev-Platform (6631380F-2D4D-43E0-8009-CF276956A95A): 0
LogDevObjectVersion: Dev-Rendering (12F88B9F-8875-4AFC-A67C-D90C383ABD29): 19
LogDevObjectVersion: Dev-Sequencer (7B5AE74C-D270-4C10-A958-57980B212A5A): 4
LogDevObjectVersion: Dev-VR (D7296918-1DD6-4BDD-9DE2-64A83CC13884): 0
LogDevObjectVersion: Dev-LoadTimes (C2A15278-BFE7-4AFE-6C17-90FF531DF755): 1
LogDevObjectVersion: Private-Geometry (6EACA3D4-40EC-4CC1-B786-8BED09428FC5): 1
LogDevObjectVersion: Dev-AnimPhys (29E575DD-E0A3-4627-9D10-D276232CDCEA): 7
LogInit: Compiled (64-bit): Aug 15 2017 02:05:26
LogInit: Compiled with Visual C++: 19.00.24215.01
LogInit: Build Configuration: Development
LogInit: Branch Name: ++UE4+Release-4.17
LogInit: Command line: -EpicPortal
LogInit: Base directory: C:/Program Files/Epic Games/UE_4.17/Engine/Binaries/Win64/
LogInit: Installed Engine Build: 1
LogInit: Presizing for max 8388607 objects, including 0 objects not considered by GC, pre-allocating 0 bytes for permanent pool.
LogInit: Object subsystem initialized
[2017.09.15-06.42.20:929][ 0]LogInit: Selected Device Profile: [Windows]
[2017.09.15-06.42.20:930][ 0]LogInit: Applying CVar settings loaded from the selected device profile: [Windows]
[2017.09.15-06.42.21:411][ 0]LogInit: Computer: DESKTOP-18ST7ET
[2017.09.15-06.42.21:411][ 0]LogInit: User: overl
[2017.09.15-06.42.21:411][ 0]LogInit: CPU Page size=4096, Cores=2
[2017.09.15-06.42.21:411][ 0]LogInit: High frequency timer resolution =3.609376 MHz
[2017.09.15-06.42.21:442][ 0]LogMemory: Memory total: Physical=3.9GB (4GB approx)
[2017.09.15-06.42.21:442][ 0]LogMemory: Platform Memory Stats for Windows
[2017.09.15-06.42.21:443][ 0]LogMemory: Process Physical Memory: 277.08 MB used, 277.08 MB peak
[2017.09.15-06.42.21:443][ 0]LogMemory: Process Virtual Memory: 275.76 MB used, 275.76 MB peak
[2017.09.15-06.42.21:443][ 0]LogMemory: Physical Memory: 3639.75 MB used, 358.56 MB free, 3998.31 MB total
[2017.09.15-06.42.21:443][ 0]LogMemory: Virtual Memory: 656.27 MB used, 358.56 MB free, 134217728.00 MB total
[2017.09.15-06.42.23:991][ 0]LogInit: Using OS detected language (en-US).
[2017.09.15-06.42.23:991][ 0]LogInit: Using OS detected locale (en-US).
[2017.09.15-06.42.24:396][ 0]LogTextLocalizationManager: No specific localization for ‘en-US’ exists, so the ‘en’ localization will be used.
[2017.09.15-06.42.33:081][ 0]LogD3D11RHI: D3D11 adapters:
[2017.09.15-06.42.33:474][ 0]LogD3D11RHI: 0. ‘Intel(R) HD Graphics 530’ (Feature Level 11_0)
[2017.09.15-06.42.33:474][ 0]LogD3D11RHI: 128/0/1999 MB DedicatedVideo/DedicatedSystem/SharedSystem, Outputs:1, VendorId:0x8086
[2017.09.15-06.42.33:660][ 0]LogD3D11RHI: 1. ‘Microsoft Basic Render Driver’ (Feature Level 11_0)
[2017.09.15-06.42.33:661][ 0]LogD3D11RHI: 0/0/1999 MB DedicatedVideo/DedicatedSystem/SharedSystem, Outputs:0, VendorId:0x1414
[2017.09.15-06.42.33:661][ 0]LogD3D11RHI: Chosen D3D11 Adapter: 0
[2017.09.15-06.42.33:720][ 0]LogD3D11RHI: Creating new Direct3DDevice
[2017.09.15-06.42.33:721][ 0]LogD3D11RHI: GPU DeviceId: 0x1912 (for the marketing name, search the web for “GPU Device Id”)
[2017.09.15-06.42.33:734][ 0]LogWindows: EnumDisplayDevices:
[2017.09.15-06.42.33:735][ 0]LogWindows: 0. ‘Intel(R) HD Graphics 530’ (P:1 D:1)
[2017.09.15-06.42.33:735][ 0]LogWindows: 1. ‘Intel(R) HD Graphics 530’ (P:0 D:0)
[2017.09.15-06.42.33:736][ 0]LogWindows: DebugString: FoundDriverCount:2
[2017.09.15-06.42.33:736][ 0]LogD3D11RHI: Adapter Name: Intel(R) HD Graphics 530
[2017.09.15-06.42.33:736][ 0]LogD3D11RHI: Driver Version: 21.20.16.4534 (internal:21.20.16.4534, unified:21.20.16.4534)
[2017.09.15-06.42.33:736][ 0]LogD3D11RHI: Driver Date: 10-7-2016
[2017.09.15-06.42.33:736][ 0]LogRHI: Texture pool is 789 MB (70% of 1127 MB)
[2017.09.15-06.42.33:767][ 0]LogD3D11RHI: Async texture creation enabled
[2017.09.15-06.42.35:423][ 0]LogD3D11RHI: GPU Timing Frequency: 12.000000 (Debug: 2 0)
[2017.09.15-06.42.35:630][ 0]LogShaderCompilers: Guid format shader working directory is -16 characters bigger than the processId version (…/…/…/…/…/…/Users/overl/AppData/Local/UnrealEngine/4.17/Intermediate/Shaders/WorkingDirectory/14816/).
[2017.09.15-06.42.35:631][ 0]LogShaderCompilers: Cleaned the shader compiler working directory ‘C:/Users/overl/AppData/Local/Temp/UnrealShaderWorkingDir/811D2D3640D14497C69E82ADE1B9FDBD/’.
[2017.09.15-06.42.35:640][ 0]LogShaderCompilers: Display: Using Local Shader Compiler.
[2017.09.15-06.42.44:333][ 0]LogTemp: Display: Loaded TP AllDesktopTargetPlatform
[2017.09.15-06.42.44:421][ 0]LogTemp: Display: Loaded TP MacClientTargetPlatform
[2017.09.15-06.42.44:511][ 0]LogTemp: Display: Loaded TP MacNoEditorTargetPlatform
[2017.09.15-06.42.44:606][ 0]LogTemp: Display: Loaded TP MacServerTargetPlatform
[2017.09.15-06.42.44:717][ 0]LogTemp: Display: Loaded TP MacTargetPlatform
[2017.09.15-06.42.44:798][ 0]LogTemp: Display: Loaded TP WindowsClientTargetPlatform
[2017.09.15-06.42.44:910][ 0]LogTemp: Display: Loaded TP WindowsNoEditorTargetPlatform
[2017.09.15-06.42.45:012][ 0]LogTemp: Display: Loaded TP WindowsServerTargetPlatform
[2017.09.15-06.42.45:111][ 0]LogTemp: Display: Loaded TP WindowsTargetPlatform
[2017.09.15-06.42.45:260][ 0]LogTemp: Display: Loaded TP AndroidTargetPlatform
[2017.09.15-06.42.45:368][ 0]LogTemp: Display: Loaded TP Android_ASTCTargetPlatform
[2017.09.15-06.42.45:462][ 0]LogTemp: Display: Loaded TP Android_ATCTargetPlatform
[2017.09.15-06.42.45:584][ 0]LogTemp: Display: Loaded TP Android_DXTTargetPlatform
[2017.09.15-06.42.45:684][ 0]LogTemp: Display: Loaded TP Android_ETC1TargetPlatform
[2017.09.15-06.42.45:875][ 0]LogTemp: Display: Loaded TP Android_ETC2TargetPlatform
[2017.09.15-06.42.46:153][ 0]LogTemp: Display: Loaded TP Android_MultiTargetPlatform
[2017.09.15-06.42.46:153][ 0]LogTemp: Display: Loaded TP Android_PVRTCTargetPlatform
[2017.09.15-06.42.46:237][ 0]LogTemp: Display: Loaded TP HTML5TargetPlatform
[2017.09.15-06.42.46:574][ 0]LogTemp: Display: Loaded TP IOSTargetPlatform
[2017.09.15-06.42.46:675][ 0]LogTemp: Display: Loaded TP TVOSTargetPlatform
[2017.09.15-06.42.46:810][ 0]LogTemp: Display: Loaded TP LinuxClientTargetPlatform
[2017.09.15-06.42.46:902][ 0]LogTemp: Display: Loaded TP LinuxNoEditorTargetPlatform
[2017.09.15-06.42.47:022][ 0]LogTemp: Display: Loaded TP LinuxServerTargetPlatform
[2017.09.15-06.42.47:176][ 0]LogTemp: Display: Loaded TP LinuxTargetPlatform
[2017.09.15-06.42.47:195][ 0]LogTargetPlatformManager: Display: Building Assets For Windows
[2017.09.15-06.42.48:047][ 0]LogWindows: LoadLibraryWithSearchPaths failed for file …/…/…/Engine/Binaries/ThirdParty/QualComm/Win64/TextureConverter.dll. GetLastError=193
[2017.09.15-06.42.48:056][ 0]LogWindows: LoadLibraryWithSearchPaths failed for file …/…/…/Engine/Binaries/ThirdParty/QualComm/Win64/TextureConverter.dll. GetLastError=193
[2017.09.15-06.42.48:247][ 0]LogWindows: LoadLibraryWithSearchPaths failed for file …/…/…/Engine/Binaries/ThirdParty/IntelISPCTexComp/Win64-Release/ispc_texcomp.dll. GetLastError=193
[2017.09.15-06.42.49:590][ 0]LogDerivedDataCache: Display: Max Cache Size: 512 MB
[2017.09.15-06.42.49:590][ 0]LogDerivedDataCache: Display: Starting with empty Boot cache
[2017.09.15-06.42.49:590][ 0]LogDerivedDataCache: FDerivedDataBackendGraph: Pak pak cache file …/…/…/…/…/…/Users/overl/AppData/Local/UnrealEngine/4.17/DerivedDataCache/DDC.ddp not found, will not use a pak cache.
[2017.09.15-06.42.49:590][ 0]LogDerivedDataCache: Unable to find inner node Pak for hierarchical cache Hierarchy.
[2017.09.15-06.42.49:590][ 0]LogDerivedDataCache: FDerivedDataBackendGraph: CompressedPak pak cache file …/…/…/…/…/…/Users/overl/AppData/Local/UnrealEngine/4.17/DerivedDataCache/Compressed.ddp not found, will not use a pak cache.
[2017.09.15-06.42.49:590][ 0]LogDerivedDataCache: Unable to find inner node CompressedPak for hierarchical cache Hierarchy.
[2017.09.15-06.42.49:676][ 0]LogDerivedDataCache: Display: Pak cache opened for reading …/…/…/Engine/DerivedDataCache/Compressed.ddp.
[2017.09.15-06.42.49:715][ 0]LogDerivedDataCache: Using Local data cache path C:/Users/overl/AppData/Local/UnrealEngine/Common/DerivedDataCache: Writable
[2017.09.15-06.42.49:883][ 0]LogMaterial: Verifying Global Shaders for PCD3D_SM5
[2017.09.15-06.42.49:936][ 0]LogSlate: Using Freetype 2.6.0
[2017.09.15-06.42.50:027][ 0]LogSlate: SlateFontCache - WITH_FREETYPE: 1, WITH_HARFBUZZ: 1
[2017.09.15-06.42.50:036][ 0]LogSlate: SlateFontCache - WITH_FREETYPE: 1, WITH_HARFBUZZ: 1
[2017.09.15-06.42.59:883][ 0]LogAssetRegistry: FAssetRegistry took 0.0278 seconds to start up
[2017.09.15-06.43.02:092][ 0]LogInit: Selected Device Profile: [Windows]
[2017.09.15-06.43.11:025][ 0]LogWindows: LoadLibraryWithSearchPaths failed for file C:/Program Files/Epic Games/UE_4.17/Engine/Binaries/Win64/UE4Editor-MeshUtilities.dll. GetLastError=193
[2017.09.15-06.43.11:025][ 0]LogModuleManager: Warning: ModuleManager: Unable to load module ‘C:/Program Files/Epic Games/UE_4.17/Engine/Binaries/Win64/UE4Editor-MeshUtilities.dll’ because the file couldn’t be loaded by the OS.
[2017.09.15-06.43.11:041][ 0]LogWindows: Windows GetLastError: The operation completed successfully. (0)

LoadLibraryWithSearchPaths failed for file C:/Program Files/Epic Games/UE_4.17/Engine/Binaries/Win64/UE4Editor-MeshUtilities.dll.

Warning: ModuleManager: Unable to load module ‘C:/Program Files/Epic Games/UE_4.17/Engine/Binaries/Win64/UE4Editor-MeshUtilities.dll’ because the file couldn’t be loaded by the OS.

above two lines are included in your log.
have you tried installing the unreal engine and epic game installer again, or may be download the file separately if available.
or there could be the problem with OS.