hmmm, i see you don't use original DMM software on your box.
Before we continue I suggest flashing a official DMM firmware if you want to get support here. This is official DMM Forum so only support for official DMM Software.
But I doubt it will help ... you should try this box on another TV or return it to your dealer (with original dmm software) .... I would say this box is defect! Ask for a replacement box on your dealer, not sure how things like this are solved in your country, here in germany you have 14 days to get a replacement box from dealer, otherwise you have to send it to DMM for repair, which will take some more time ...
How does my images come from http://dreamboxupdate.com/opendreambox/1.6/dm8000/images/
I thought it was official website
Well I'll flash with good