Problem with Dell Optiplex: Unable to find devc-con

I am new to QNX and I like it. I installed it in two Dell optiplex machines.
In one QNX runs but there is no sound and I don’t know hw to configure the
sound card.
In the second machine (both are Optiplex GX1) it does not even boot, it says
" Unable to find devc-con". I have no idea how to configure this.


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