Windows 7 - speaker crackle when hdd is working

Hello forumanians

For a long time i have ignored a problem with my laptop which is a Acer Aspire 5739G, and that is i hear crackling from my speaker on the laptop itself and speakers i plug into my laptop. It's getting a little annoying due to i listen to music from when i get up to i go to sleep and i have some spare time right now so i thought why not try to fix it. Hope someone knows how to fix it or else point me to what may be making this noise, because i have tested a few things and i know it isn't any programs due to i deleted processes so i only had like 7 in the entire list

The crackling noises are a common reported problem. If you do a search on this forum section you will see many posts about it. Unfortunately there is no "one fix" for the problem. Each has to be individually handled on it's own. There are some general issues such as wi-fi and bluetooth causing the noise. Video and sound drivers are another often noted issue (update both and see if it helps - only use the Acer supplied sound driver, a non-PC vendor sound driver may not work or work correctly).

Another possibility is the shared Interrupt (IRQ) that the sound is on. Sound is a low priority item in Windows and is on a shared Interrupt with a higher priority device. The higher priority device "interrupting" the audio can cause dropouts, clicks, static or whatever. One thing to try is to Uninstall the audio device in the Device Manager (do not check the box to uninstall the drivers) then restart the PC. When Windows starts it will detect and reinstall the sound, sometimes this puts it on a different shared IRQ and can fix problems.

thank you, i appreciate the answer, i will do them one by one to be certain what causes it so that maybe someone else with for instance my specs has the same problem