yes i seen what Zoran says about dlls but not work
mingwm10.dll, QtCore4.dll, libgcc_s_dw2-1.dll, QtGui4.dll, QtNetwork4.dll, QtWebKit4.dll, QtXmlPatterns4.dll, phonon4.dll.
zoran say "All of them were originally installed"
mingwm10.dll not exist in dir "C:\Qt\4.8.6\bin" i also install mingw32
mingwm10.dll not exist...