I found similar topics with same kind of symptoms, but they didn't fully describe my problem, so i started new topic.
Somehow when i start my computer it is 60/40 chance that the Audio Express gives any sound out. Computer might see that the interface is plugged in, but it does not give sound out and videos don't play until i change audio-interface or i get Audio Express working by restarting it or restarting computer. Sometimes it stops working when i'm jumping on different softwares. Sometimes it stops working just by letting computer stand by itself.
There is no pattern it is just random, i might have to restart computer 3 times to get Audio Express working.
I have tested every usb port and same thing occurs, have updated latest firmwares and applications, restarted the whole system, uninstalled and reinstalled every application and driver. Does not help. Still throws audio out randomly.
This has been problem from the day i bought it and i learned to live with it, but now i'm starting to get annoyed by it.

I would really appreciate if someone could help me with this thing. I really don't want to buy a new audio-interface.
Thanks!