my windows mobility-centre knop is now working what to do?

[Rishabh_2]

I'm having DELL inspiron 15r 5520,my Windows mobility centre knop,. Dell Audio met vooraf
ingestelde schakel knop , Dell Instant Launch-knop .This all the 3 buttons on my keyboard are not working .
It would really be helpful if you help me with these issue!
Thank you!

 

[Phillip Corcoran]

Try reinstalling the Dell Quickset Application for your model from Dell's website. It should be on the drivers page for your model, under the Application (Toepassing) category.

Since part of your post is in Dutch I'm assuming your Dell was purchased in the Netherlands in which case you need to go here: http://www.dell.com/support/home/nl/nl/nldhs1/product-support/product/inspiron-15r-5520/drivers

Otherwise just select the correct country via the link at bottom-right of that page.