Before doing anything else, try updating your Intel drivers. If that works, you can avoid the whole BIOS procedure.
If you've never gone into BIOS before, you must use your arrow keys to move from one setting to another. Press enter after changing a setting.
Before disabling PTT function, if you use a PIN rather than a password to log onto your computer, change it to using a password instead. I'm not sure that's necessary, but someone else that said you need to do that first, so I did it just to be on the safe side. Without going into BIOS, just go to your computer settings, then Accounts and change it to use a Microsoft account to sign in.
The BIOS does not automatically ask for a password unless you make one. (Unless your particular computer happens to ask for one. In that case, read your manual to find out what the default password is. I've never had to do that on any of my computers). Once in BIOS there's an option to disable to PTT function under Security. If it's not grayed out, I would not bother making a BIOS password. But if it's grayed out, you will not have the option to change the setting unless you make a password. If you have to set a BIOS password in order to disable to PTT, be sure you type it exactly right. Getting back into BIOS is not at all easy if you don't.
Hope this helps.
Edited by Ashani2, 07 May 2018 - 08:21 PM.