Having issue with micrtophone polycom realpresence trio 8800

Hi

we have two polycom realpresence trio 8800 version  5.7.1.4133, they both have the same issue, the microphones are not working for the first time, Pcs can detect them and see them but no detection of voice after the restart them, the polycome it will start working.

I know we using old version but last ti,e when we update them it didn't work at all and we install the old version.

Thanks