Headphones not working cant hear them on my pc but on other ones works

[EmilBooss .]

So today, after I restarted the PC, I can't hear my headphones anymore, I kept trying to make them work, every now and then some beeps are heard, I connected them to my friend's computer and they worked perfectly, the headphones are Aqirys Altair, I need help and I thought I could find it here , oh and there is something else when i wach videos and now they are in slow motion only when headphones are connected.I tried some other headphones on my pc ad they work just fine , but my headphones dont work on my pc but as i said on my friends pc works just fine.They are USB headphones

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