Please, post your log from the recording attempt.
Here it is.
14:07:18.209: CPU Name: Intel(R) Pentium(R) CPU G620 @ 2.60GHz
14:07:18.209: CPU Speed: 2593MHz
14:07:18.209: Physical Cores: 2, Logical Cores: 2
14:07:18.209: Physical Memory: 8156MB Total, 4703MB Free
14:07:18.209: Windows Version: 10.0 Build 14393 (revision: 222; 64-bit)
14:07:18.209: Running as administrator: true
14:07:18.210: Aero is Enabled (Aero is always on for windows 8 and above)
14:07:18.236: OBS 0.16.2 (64bit, windows)
14:07:18.236: ---------------------------------
14:07:18.237: ---------------------------------
14:07:18.237: audio settings reset:
14:07:18.237: samples per sec: 48000
14:07:18.237: speakers: 2
14:07:18.238: ---------------------------------
14:07:18.238: Initializing D3D11..
14:07:18.238: Available Video Adapters:
14:07:18.240: Adapter 1: AMD Radeon R7 200 Series
14:07:18.240: Dedicated VRAM: 2128183296
14:07:18.240: Shared VRAM: 4276553728
14:07:18.240: output 1: pos={0, 0}, size={1366, 768}, attached=true
14:07:18.242: Loading up D3D11 on adapter AMD Radeon R7 200 Series (0)
14:07:18.254: D3D11 loaded sucessfully, feature level used: 45056
14:07:18.912: ---------------------------------
14:07:18.912: video settings reset:
14:07:18.912: base resolution: 1366x768
14:07:18.912: output resolution: 1364x768
14:07:18.912: downscale filter: Lanczos
14:07:18.912: fps: 30/1
14:07:18.912: format: NV12
14:07:18.915: ---------------------------------
14:07:18.925: [CoreAudio encoder]: Adding CoreAudio AAC encoder
14:07:18.926: [AMF Encoder] Version 1.3.1.0-1.3.0.5
14:07:18.926: [AMF Encoder] <Plugin::AMD::AMF::AMF> Initializing...
14:07:18.928: [AMF Encoder] <Plugin::AMD::AMF::AMF> Loaded 'amfrt64.dll'.
14:07:18.928: [AMF Encoder] <Plugin::AMD::AMF::AMF> Runtime is on Version 1.3.0.5
14:07:18.928: [AMF Encoder] <Plugin::AMD::AMF::AMF> AMF Library initialized.
14:07:18.928: [AMF Encoder] <Plugin::AMD::AMF::AMF> Initialized.
14:07:18.928: [AMF Encoder] Gathering Capability Information...
14:07:18.957: [AMF Encoder] Failed to gather Capabilities for Encoder Type AVC, error code 10.
14:07:18.957: [AMF Encoder] Failed to gather Capabilities for Encoder Type AVC, error code 10.
14:07:18.958: [AMFTrace] 2016-10-09 14:07:18.958 19B8 [AMFEncoderHEVC] Error: ..\..\..\..\..\runtime\src\components\EncoderHEVC\EncoderHEVCImpl.cpp(681):Assertion failed:InitAveService() Failed to create AHEVC Service. AHEVC error = 0x80000000
14:07:18.958: [AMFTrace] 2016-10-09 14:07:18.958 19B8 [AMFEncoderHEVC] Error: ..\..\..\..\..\runtime\src\components\EncoderHEVC\EncoderHEVCImpl.cpp(270):AMF_ERROR 36 : AMF_ENCODER_NOT_PRESENT: Prepare() - Failed to init HEVC service
14:07:18.958: [AMF Encoder] Failed to gather Capabilities for Encoder Type HEVC, error code 36.
14:07:18.966: [AMF Encoder] Type | Acc.Type | Max Bitrate | Stream # | Max Profile | Max Level | BFrames | Ref. Frames | Layer # | FSM | Instance #
14:07:18.966: [AMF Encoder] AVC | None | 0 | 0 | 0 | 0 | No | 0 - 0 | 0 | No | 0
14:07:18.966: [AMF Encoder] SVC | None | 0 | 0 | 0 | 0 | No | 0 - 0 | 0 | No | 0
14:07:18.966: [AMF Encoder] HEVC | None | 0 | 0 | 0 | 0 | No | 0 - 0 | 0 | No | 0
14:07:18.966: [AMF Encoder] Type | Flow | Min. Res. | Max. Res. | S.I | Align | Formats | Memory Types
14:07:18.966: [AMF Encoder] AVC | Input | 0x 0 | 0x 0 | No | 0 | |
14:07:18.966: [AMF Encoder] AVC | Output | 0x 0 | 0x 0 | No | 0 | |
14:07:18.966: [AMF Encoder] SVC | Input | 0x 0 | 0x 0 | No | 0 | |
14:07:18.966: [AMF Encoder] SVC | Output | 0x 0 | 0x 0 | No | 0 | |
14:07:18.966: [AMF Encoder] HEVC | Input | 0x 0 | 0x 0 | No | 0 | |
14:07:18.966: [AMF Encoder] HEVC | Output | 0x 0 | 0x 0 | No | 0 | |
14:07:18.974: Required module function 'obs_module_load' in module '../../obs-plugins/64bit/libcef.dll' not found, loading of module failed
14:07:18.975: Required module function 'obs_module_load' in module '../../obs-plugins/64bit/libEGL.dll' not found, loading of module failed
14:07:18.975: Required module function 'obs_module_load' in module '../../obs-plugins/64bit/libGLESv2.dll' not found, loading of module failed
14:07:18.976: Failed to load 'en-US' text for module: 'obs-browser.dll'
14:07:18.976: [browser_source: 'Version: 1.25.0']
14:07:18.978: LoadLibrary failed for 'nvEncodeAPI64.dll': The specified module could not be found.
14:07:18.978: (126)
14:07:19.186: VLC found, VLC video source enabled
14:07:19.477: No blackmagic support
14:07:19.484: ---------------------------------
14:07:19.484: Loaded Modules:
14:07:19.484: win-wasapi.dll
14:07:19.484: win-mf.dll
14:07:19.484: win-dshow.dll
14:07:19.484: win-decklink.dll
14:07:19.484: win-capture.dll
14:07:19.484: vlc-video.dll
14:07:19.484: text-freetype2.dll
14:07:19.484: rtmp-services.dll
14:07:19.484: obs-x264.dll
14:07:19.484: obs-transitions.dll
14:07:19.484: obs-text.dll
14:07:19.484: obs-qsv11.dll
14:07:19.484: obs-outputs.dll
14:07:19.484: obs-filters.dll
14:07:19.484: obs-ffmpeg.dll
14:07:19.484: obs-browser.dll
14:07:19.484: image-source.dll
14:07:19.484: frontend-tools.dll
14:07:19.484: enc-amf.dll
14:07:19.484: coreaudio-encoder.dll
14:07:19.484: ==== Startup complete ===============================================
14:07:19.499: All scene data cleared
14:07:19.499: ------------------------------------------------
14:07:19.538: WASAPI: Device 'Speakers (Realtek High Definition Audio)' initialized
14:07:19.542: Switched to scene 'Scene'
14:07:19.542: ------------------------------------------------
14:07:19.542: Loaded scenes:
14:07:19.542: - scene 'Scene':
14:07:19.542: - source: 'Display Capture' (monitor_capture)
14:07:19.542: ------------------------------------------------
14:07:19.588: adding 42 milliseconds of audio buffering, total audio buffering is now 42 milliseconds
14:07:20.765: Update check: last known remote version is 0.16.2
14:07:21.148: [AMF Encoder] <AMFEncoder::H264SimpleInterface::H264SimpleInterface> Initializing...
14:07:21.148: [AMF Encoder] <Plugin::AMD::VCEEncoder::VCEEncoder> Initializing...
14:07:21.169: [AMF Encoder] <Plugin::AMD::VCEEncoder::VCEEncoder> Creating a component object failed with error AMF_NOT_SUPPORTED (code 10).
14:07:21.182: [AMF Encoder] Unable to create Encoder, see log for more information.
Huh. I'm not surprised about this crap.