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fatal error LNK1120: 10 unresolved externals

Need some help :/ i face some error after trying to release a simple program. wasted my whole day from one problem till the other...

1>main.obj : error LNK2001: unresolved external symbol "void __cdecl cv::namedWindow(class std::basic_string<char,struct std::char_traits<char="">,class std::allocator<char> > const &,int)" (?namedWindow@cv@@YAXAEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@H@Z) 1>main.obj : error LNK2001: unresolved external symbol "int __cdecl cv::waitKey(int)" (?waitKey@cv@@YAHH@Z) 1>main.obj : error LNK2001: unresolved external symbol "public: __cdecl cv::_InputArray::_InputArray(class cv::Mat const &)" (??0_InputArray@cv@@QEAA@AEBVMat@1@@Z) 1>main.obj : error LNK2001: unresolved external symbol "void __cdecl cv::fastFree(void *)" (?fastFree@cv@@YAXPEAX@Z) 1>main.obj : error LNK2001: unresolved external symbol "public: void __cdecl cv::Mat::deallocate(void)" (?deallocate@Mat@cv@@QEAAXXZ) 1>main.obj : error LNK2001: unresolved external symbol "int __cdecl cv::_interlockedExchangeAdd(int *,int)" (?_interlockedExchangeAdd@cv@@YAHPEAHH@Z) 1>main.obj : error LNK2001: unresolved external symbol "public: virtual bool __cdecl cv::VideoCapture::open(int)" (?open@VideoCapture@cv@@UEAA_NH@Z) 1>main.obj : error LNK2001: unresolved external symbol "public: virtual __cdecl cv::VideoCapture::~VideoCapture(void)" (??1VideoCapture@cv@@UEAA@XZ) 1>main.obj : error LNK2001: unresolved external symbol "public: __cdecl cv::VideoCapture::VideoCapture(void)" (??0VideoCapture@cv@@QEAA@XZ) 1>main.obj : error LNK2001: unresolved external symbol "void __cdecl cv::imshow(class std::basic_string<char,struct std::char_traits<char="">,class std::allocator<char> > const &,class cv::_InputArray const &)" (?imshow@cv@@YAXAEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@AEBV_InputArray@1@@Z) 1>C:\Users\Steven\Documents\Visual Studio 2010\Projects\mynewproject\x64\Release\mynewproject.exe : fatal error LNK1120: 10 unresolved externals 1> 1>Build FAILED. 1>