Hi JoRu,
Which version of PCM did you install 32 or 64 bit, if you did install the 32 bit, i will recommend you to install the 64 bit as your hardware is not supported for the 32 bit.
The server has to be a PCM dedicated.
It could also be that your mysql database for PCM crashed.
If you meet all the PCM requirements, i will suggest that when it happens again, collect print screens, error messages and contact the support