On my new HP 250 G2 win7 64 bit laptop an external audio input works for less then a second and shuts off.
This is an transformer isolated output from my amature radio. A microphone has the same affect on the laptop.
The same output has worked for years on other HP laptops.
I am using the 3 and 4 bands on a 4 band minature phone plug.
In the Sound panel "Mic in at front panel (black)" shows "not plugged in" to start
When I insert the mini 4 band minature phone plug it swirches to show "ready"
When I connect the audio in or a mic it works for a second then switches to "not plugged in"
My RTTY application shows the radio input working correctly at the right levels for a second but cuts off.
How do I fix this?
Thanks
Tim