coffee break 26 (my PC 5)

Finally, June 01, I requested for the shop to repair my motherboard,
which had an issue of sound .

I have done many things.
-drivers update
-Bios update
-change the jack and new cable of headphone
-OS update and changing the setting
-using USB-dac
and so on.
However, problems did not go away.

As nothing replies from the shop over three weeks,
I think the problems were replicated and the motherboard was going  into repair. 

Everything comes to him who waits.
Is it true?