Windows Phone 8.1 Release 3, power and camera buttons not working

[techjmw]

I upgraded yesterday to the 3rd release candidate and now my power and camera physical buttons done work. I can use double tap to wake my phone and added a camera shortcut in my notifications, but it is realm annoying. Anyone else have this issue or now how to fix? Lumia 920 on ATT phone.

 

[Laura Knotek]

Have you tried a soft reset first?

If that does not work, you might need to do a hard reset.

 

[Akash Patel]

Have you tried a soft reset first?

If that does not work, you might need to do a hard reset.

I guess he can't do soft reset as his power button is not working.
Or is there any other way we can do a soft reset?

 

[keerthi vasan]

Try hard reset. Go to settings> about> reset my phone. You don't need the power keys for that. WARNING: Hard reset may switch off 'double tap to wake'. So even if hard reset didn't solve your problem you may not be able to switch on your phone. So better get it to the service centre