Errors encountered when executing the samples

Greetings from a beginner programmer, I've built the sample codes for Decode and Encode by using Visual Studio Express. I started testing them by using the Command Prompt. After I've filled the parameters, the following errors appeared.

For encode: sample_encode.exe h264 -i input.yuv -o output.h264 -w 720 -h 480 -hw

[ERROR], sts=MFX_ERR_UNKNOWN(-1), CEncodingPipeline::GetFreeTask, m_TaskPool.SynchronizeFirstTask failed at src\pipeline_encode.cpp:1516

[ERROR], sts=MFX_ERR_UNKNOWN(-1), CEncodingPipeline::Run, m_pmfxENC->EncodeFrameAsync failed at src\pipeline_encode.cpp:1851

[ERROR], sts=MFX_ERR_UNKNOWN(-1), wmain, pPipeline->Run failed at src\sample_encode.cpp:1072

For decode: sample_decode.exe h264 -i text.mp4 -o output.yuv -d3d -sw

[ERROR], sts=MFX_ERR_MORE_DATA(-10), CDecodingPipeline::InitMfxParams, m_FileReader->ReadNextFrame failed at src\pipeline_decode.cpp:702

[ERROR], sts=MFX_ERR_MORE_DATA(-10), CDecodingPipeline::Init, InitMfxParams failed at src\pipeline_decode.cpp:404

[ERROR], sts=MFX_ERR_MORE_DATA(-10), wmain, Pipeline.Init failed at src\sample_decode.cpp:719