I have a desktop board DH77KC, which shows sometimes a strange behaviour. When I turn it on, the cooler goes up but no beep or anything is heard. There is also no video output. Reset does not solve the problem nor does complete powering off. If I push the power button long to shut off, some beep sounds are heard and the computer goes off. But turning on again does still not solve the issue. Only if I pull out power cord and let it out for some time the computer starts again. Is there anything known about such a problem with DH77KC? What do the beeping sounds mean when turning off the computer by pushing power button long time? I suppose that these beep sounds are given from DH77KC, but could not find any hint about what they might mean since there is only information about beep codes while starting up and not while shutting down.
Any hints about where to start here?
Thanks a lot
Stefan