Here are some steps you can try to verify if the screeching sound is hardware related or software related.
Try a pair of headphones, since you are no longer using the integrated speakers, do you still have the screeching sound? If not there may be a problem with the integrated speakers. If so then you know it isn't a problem with the speakers.
Run diagnostics start the system tapping F12 and choose diagnostics, allow the basic tests to complete and choose no to memory diagnostics, choose yes to hardware diagnostics and choose custom tests, and then sound or audio tests. Do you hear the screeching now? If you hear the screeching sound now, then you know it isn't a software issue. You may require a service on the system.
Use Msconfig to temporarily disable all the startup programs. Click start, search and type in msconfig, click the services tab and check hide all Microsoft services, and then click disable all, click the startup tab and click disable all. Click ok and allow the system to restart. Crank up some tunes and see if you get the screeching sound. When you are finished testing with msconfig please return it to normal startup. If killing everything in msconfig made a difference then it is unlikely that you have a hardware problem but do have a software problem.
Here are some quick tests to try to determine the cause of the problem. These tests should give you an idea that the problem is defective hardware or software related. Please let me know what you find out.
DELL-Terry B
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July 17th, 2012 17:00
Hillsidefree
Welcome to the community
Here are some steps you can try to verify if the screeching sound is hardware related or software related.
Try a pair of headphones, since you are no longer using the integrated speakers, do you still have the screeching sound? If not there may be a problem with the integrated speakers. If so then you know it isn't a problem with the speakers.
Run diagnostics start the system tapping F12 and choose diagnostics, allow the basic tests to complete and choose no to memory diagnostics, choose yes to hardware diagnostics and choose custom tests, and then sound or audio tests. Do you hear the screeching now? If you hear the screeching sound now, then you know it isn't a software issue. You may require a service on the system.
Use Msconfig to temporarily disable all the startup programs. Click start, search and type in msconfig, click the services tab and check hide all Microsoft services, and then click disable all, click the startup tab and click disable all. Click ok and allow the system to restart. Crank up some tunes and see if you get the screeching sound. When you are finished testing with msconfig please return it to normal startup. If killing everything in msconfig made a difference then it is unlikely that you have a hardware problem but do have a software problem.
Here are some quick tests to try to determine the cause of the problem. These tests should give you an idea that the problem is defective hardware or software related. Please let me know what you find out.
TB