Connect to your VPS through VNC and check your machines' status and logfiles.
VNC credentials are available in the VPS panel after you activate the VNC service.
EDIS also provides a noVNC interface from the KVM panel. noVNC is a browser-based (HTML5), OpenSource, VNC client that runs well in any modern browser including mobile browsers (iOS and Android).
If you need to dig deeper, boot "grml-latest.iso" (rescue system) from our image library.