Loud pop from Left Channel when power-on/reboot

Well it seems the only affected jack is the front speakers one, the green one and only the left channel, plugging the jack in the black or orange one (rear speakers center/sub) no pop or nose is occuring upon reboot, the front panel headphones one is the same, no noise or pop on it when rebooting or powering on the system, so it seems to be a hardware fault on the motherboard sound card or maybe a firmware bug that is causing this pop to occur upon power on/reboot but it seems strange that it occurs only on the front speakers green jack.. 

Edited by cristy6100 - 02 Apr 2018 at 12:11am

Try a decent quality home theater or electronics power strip/surge protector. This doesn't necessarily have to be expensive, but do read for reviews and make sure it actually does something and isn't just a heavy hunk of metal snakeoil.

Try both putting all the equipment on the same power bank, then try on different isolated power banks, and maybe it will solve the issue. For example triplite isobar powerstrips have isolated power banks.

If that doesn't solve your problem,  i'd next try a UPS or switch from analog to s/pdif / optical.

that being said, unless your equipment sucks, I don't think you are specifically damaging it even if it does get pops.

but your receiver is at fault here


edit:
dont know if my speakers qualify as decent
but i use yamaha htr 4069
with this 5.0 speakers:

Skytronic 5.0 Home Teather
Power max.: 3x 50W + 2x 180W, equivalent to 1150W
Power rms: 335W
Woofers: 10/16 cm
 
and this subwofer:


auna linie-300-sw
Power max.: 300W
Power rms: 150W
Woofer: 25 cm

no issues here
but with old logitech x530 i was having loud pop when either pc startup or shutdown, obviously it was at fault logitech amplifier, they replaced it later with fixed version year later (z-506 i think)


Edited by kerberos_20 - 01 Apr 2018 at 8:56pm