Qt program does not run on my tablet (Win 8.1 32bit)

[Vaaal88]

Hello all,
I developed a small application with Qt Creator on a Windows 7 64bit machine with MinGW 32bit. The application works fine both within the IDE that as a separate software (with the DLL in the same folder). I am trying to make this application work on my Tablet (Samsung ATIV XE300TZC, Windows 8.1 [added: 32bit]), without success. One I double click the binary file, the loading icon appears and nothing else. If I open it from command line, it just seems to get stucked.

I tried to run Windows 8.1 on a virtual machine on my main pc and the software worked there (!), so I guess it's not a problem with th SO. I thought I could be that my tablet's graphic card is not good enough for qt, but it turned out it is Intel GMA, which indeed supports openGL 2.1. So I am completely clueless now. Any idea? Thank you.