Annoying Waffle/Helicopter noise from my new C7000v2 Has anyone else had this issue?

[MRoles]

I purchased this Modem Router 4 months ago and noticed it now has this horrible intermittent Helicopter sound coming from the Router. This item was not cheap and I am concerned that it will not last long. Has anyone else had this issue?

[vkdelta]

you should contact support for RMA to determine if it is HW issue. 

[MRoles]

       I contacted support The call was answered in India and their suggestion was to reboot to rule out a software issue 😡 I am NOT happy

[vkdelta]

Please provide support case #.

@Darren pls check it

[MRoles]

I was not given a case number. I was instructed to reboot to rule out software as being the problem. I don't underrstand how software can cause an intermitten hardware noise. I am NOT happy.