I would try to flash a new image, press the frontpanel button when you turn it on, you will see it flashing (giving you the IP address, like 192 it's 1 blink, then 9 blinks, then 2 blinks etc)... or you can find out the IP on your router as well.

And flash the latest openpli, that works smoothly,

Link : http://openpli8xstar.japhar.net/OpenPLi8xstar/openpli-enigma2-8xstar-dm500hdv2.nfi

TS
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DM8000, DM800se, DM500HD, DM800HD, DM7025, DM7020s, DM7000, DM500s
VU+ Solo, VU+ Uno, VU+ Duo, Kathrein UFS910
Tivusat, TNTSat, Fransat, SSR/TSR, BBC1-2-3/ITV
DE-OpenBlackHole 1.4 image : http://www.openblackhole.com/