Windows 7 Strange "blip" sound

Troubleshooting Steps:​

1. Check Power Settings:
   • Verify that the power settings are correctly configured to "do nothing" when the lid is closed. Sometimes settings can revert after updates or changes.
   []Update Drivers:
   • Ensure all audio and system drivers are up-to-date. Outdated drivers can sometimes cause strange behavior like unexpected sounds.
   []Disable Notification Sounds:
   • It's possible that the sound you're hearing is a system notification sound. Temporarily disabling notification sounds can help identify if they are the source of the issue.
   []Check Background Applications:
   • Close any unnecessary applications running in the background to see if any of them are causing the sound.

     Potential Solutions:​

   []Disable System Sounds:
   • You can try disabling system sounds altogether to stop the unwanted "blip" sound. Here's how to do it:
     • Go to Control Panel > Hardware and Sound > Sound.
     • In the "Sound" tab, locate "Program Events" and customize or disable system sounds.
   []Check Event Viewer:
   • Use the Event Viewer to review system events related to the sound occurrence for more insights on what's triggering it.
   []Inspect System Sounds:
   • Check if the sound you are hearing is related to a specific system event or action. You can customize or change these sounds in the Sound settings.
   []Update BIOS:
   • Updating the BIOS can sometimes resolve unexpected system behavior. Ensure you follow the manufacturer's guidelines for BIOS updates.
   []Third-party Software Check:
   • If you have any third-party software related to power management or system maintenance, review their settings to ensure they are not causing the sound.

     How to Disable System Sounds on Windows 7:​

   []Press Windows Key + R to open the Run dialog. []Type mmsys.cpl and press Enter. []In the Sound window, go to the Sounds tab. []Under "Program Events," you can select system sounds and choose "None" to disable them.
2. Click Apply and then OK to save the changes. By following these steps and trying out the suggested solutions, you should be able to troubleshoot and address the issue of the constant "blip" sound when closing the lid of your HP HDX16 laptop running on Windows 7 Home Premium x64.