Qt Creator does not launch and yields "The application was unable to start correctly (0xc0000007b)" error after fresh online install on Windows

I've downloaded online installer for Qt Community edition, launched it, and asked it to install Qt 5.6.3 and MinGW 4.9.2 on an SD card (as I don't have enough space on the system partition). After some downloading, it succeeded and I can see ~3GB of files on the card.

Now, when I try to run Qt Creator, it immediately fails to start with "The application was unable to start correctly (0xc0000007b)". My Windows 7 is Russian, so attached screenshot is in Russian as well.

I've tried running Dependency Walker on qtcreator.exe and it shows that two DLLs are unable to load: Qt5Qml.dll and Qt5Network.dll. Dependency Walker is unable to say anything except for "At least one module was corrupted or unrecognizable to Dependency Walker, but still appeared to be a Windows module" when trying to inpect any of these two dlls (from Qt\Tools\QtCreator\bin directory). Windows Explorer is unable to display any exta information about these DLLs as well (e.g. Qt version), in contrast with Qt5Core.dll, for example. Same problem happens with Qt\5.6.3\mingw49_32\bin\Qt5Qml.dll , but not Qt5Qmld.dll from either location. So far it doesn't look like a downloading problem.

Attached DLLs are from Qt\Tools\QtCreator\bin directory. Qt5Core.dll is inspected just fine, while the remaining two look corrupted for Dependency Walker.