K8097 (4motors) board with the default software

hi everyone,

i have installed successfully the software (MotorDemo) and hardware on windows 7.
I have the card connected all the time without torque turned on.
In the beginning everything works fine but after a couple of hours everything connected, nothing works :frowning:

need your help, thanks in advance

Have you tried it on a different machine?
Are any of the chips over heating?

by another machine you mean another computer? yes. still the same!

the chips are not overheating.

When i restart my computer and connect to the right com port everything works fine. So i leave everything connected. But after a few hours nothing works!