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Loud Screeches Scratches Hisses on mouse clicks and movements

For the Experienced or Amateur Genius:

A Mystery: I am getting spontaneous loud screeching and hissing sounds when I click on a directory or file, and sometimes scratching noises if I drag a window. This is intermittent and random. Happens and then stops. I have gotten: No BSOD's, No Application or System Errors Logged in the Event Viewer. No Trojans or Spyware I can detect with NAV 2003, S&D, AdAware. A totally clean HiJackThis Log. Just did a repair install of WinXP and the same happened. 15 hour stressed Mushkin Memory. Memtest showed absolutely No Errors!!!!

Tried a Creative SB Audigy, which I had used in the same machine previously without popping and it was now hissing and popping when I dragged a screen, But did not leave it in long enough to see if it screeches. So it seems common to all sound.

Power on the 12+ varies from 11.88 to 11.98. There does not seem to be a heat problem (38c to 45c). I disabled shadowing, bios cacheing and cool&quiet.

This seems to have started after a totally clean install of XP Pro which I did after I started getting BSODS with 9c exceptions. The 9c exceptions disappeared completely, but now I have this mess that is beyond my capabilities to diagnose.

Need some serious help.

Thanks!


MSI KT800 Neo FSR Bios Rev. 1.9
Athlon64 3000+
1GB Mushkin Basic
2 Samsung SATA 160GB Drives (Non-Raid Config)
Onboard Realtek AC '97 Sound or Creative SB
Nvidia GeForce2 MX200 32MB
Realtek RT8139/810X Ethernet Adapter
Realtek Onboard RTL 8169Gigabit Lan 10/100 driver Enabled
TAGAN 380W PSU
WinXP Pro (With or Without SP1) (Never downloaded SP2)
 
Checked in Safe mode as well and NO conflicts. AAAAAAAAAAAAAAAAAAARRRRRRRRRRRGH!!!

Good try since it would make sense for me to forget the obvious. Thanks.

BTW, I ihave the latest Via 4in1s and most current bios on the board. I also recall now that I recently noticed a strange buzzing sound intermittently when I would sometimes click on a link in IE. I didn't give it much thought, thinking it was actually a new sound scheme/theme or something. Maybe a precursor for this more extreme sound problems? And BTW music plays perfectly without pops and clicks with the AC '97 and would be like a muffled and scratchy old record, unlistenable with the Creative Audigy! I had to remove it since it was unusable.

Right now I am using the machine and it is OK, but suddenly, for no apparent reason, the loud screech will start. I tried to tie it to some event in the application or system logs but nothing indicates a particular app or event.
 
Things are starting to get interesting now. The machine was off all morning and I checked the event viewer. Had two Redbook error entries for my two optical drives saying they do not support digital audio and should be replaced.
I have a JLMS 166S DVD/CDROM drive and a BenQ 1610 DVDRW. Each has the latest Bios. DOH????

Next. I played a Music CD from the JLMS using the control on the front. Worked perfectly. Then I opened media player to try and play it from the interface. I got an interesting message:

The procedure entry point GetIUMS could not be located in the dynamic link library MSDART.DLL

Do you think it's time for a fourth XP Pro reinstall?

 
Solved! Turns out this problem is simply related to the speaker wiring. Anything from a loose plug to speaker and mouse cables in too close proximity can cause interference. Turns out I had rerouted and changed some speaker cables, and the mouse cable and speaker cable were entwined.

Thanks for the feedback!
 
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