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Windows 7: How to find Device Disconnect event in Win7 logs?

20 Sep 2011   #1
Dave McKeen

Microsoft Windows 7 Professional SP1 64-bit - OEM
How to find Device Disconnect event in Win7 logs?

Hello! I have a PC I assembled last June. After I loaded it up with my applications and connected my devices I began getting device disconnect sounds as well as a few device connect sounds. I've been troubleshooting by disconnecting all devices then adding devices back one at a time to try to find the culprit. I'm not getting consistent or convincing results so far, but will keep working on that approach.

A Web search on the subject returns lots of results where users are experiencing these sounds. Answers are sparse. And antagonizing! I have not found any hints as to how to extract from the system what is actually happening. What I am looking for is if anybody knows where in the system I can find a log that records device connect/disconnect events associated with these sounds. Anybody have a clue?

CASE Cooler Master HAF 912 RC-912-KKN1 Mid Tower
CPU Intel BX80623I72600K Core i7-2600K Sandy Bridge 3.4GHz (3.8GHz Turbo Boost)
CPU Heat Sink Cooler Master GeminII S RR-CCH-PBU1-GP 120mm Sleeve
DRAM 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10600) Desktop Memory Model CT2KIT51264BA1339
ZOTAC ZT-40503-10L GeForce GTS 450 (Fermi) 1GB 128-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card
PSU Cooler Master Silent Pro Gold Series RS800-80GAD3-US 800W
DRIVE0 (O/S) OCZ VTX3MI-25SAT3-120G Vertex 3 MAX IOPS Edition 2.5" 120GB SATA III MLC Internal Solid State Drive (SSD)
DRIVE1 (Data) Hitachi UltraStar A7K2000 0F10452 2TB 7200 RPM 32MB Cache SATA 3.0GB
DRIVE2 (Apps, Programs & Updates, Web site) OCZ VTX3-25SAT3-120G Vertex 3 2.5" 120GB SATA III MLC Internal Solid State Drive (SSD)
BLU-RAY Burner Lite-On iHBS212
O/S Microsoft Windows 7 Home Premium 64 bit
External Drive WD My Book 3.0 2 TB USB 3.0
Keyboard Rosewill Cherry MX Switch (Brown) Mechanical Keyboard
Monitor NEC LCD2190 UXi LCD 'twist' tech 1600 x 1200 ppi.

My System SpecsSystem Spec
20 Sep 2011   #2

Win 8 Release candidate 8400


The best place to start is in event viewer. You want to do whatever you need to cause the problem and look in event viewer around that time.

There are several ways to find what the problem is. The best is to go into event viewer (type eventvwr in search). Event viewer (local) and look for the critical errors listed in the last day, week, etc. Then go to the windows log>application tab. Finally the windows Logs>system tabs.

You want to look for critical errors (they have red in the left column ). If nothing critical is related to the problem keep looking it is there.

When you find them please note the event ID, and the source codes and tell us what they are.
My System SpecsSystem Spec
21 Sep 2011   #3
Dave McKeen

Microsoft Windows 7 Professional SP1 64-bit - OEM

Thanks! I can force the connect/disconnect sound by plugging in and unplugging a flash card reader or my pen graphics tablet. It will be a few days before I can get to it, but I'll report back.
My System SpecsSystem Spec

26 Sep 2011   #4
Dave McKeen

Microsoft Windows 7 Professional SP1 64-bit - OEM

I'm sorry about the delay getting back to you, but now I have an opportunity to focus my attention on this problem.

In Event Viewer > Windows Logs > System, most of the events are related to Service Control Manager event 7036: When I hear the Device Disconnect sound I find "The Multimedia Class Scheduler service entered the running state." was just logged. When a corresponding "The Multimedia Class Scheduler service entered the stopped state" is logged there is no accompanying sound.

I would like to find what the implications are of "The Multimedia Class Scheduler service entered the running/stopped state." and see if I can stop it from toggling between states. Any ideas? - Thanks
My System SpecsSystem Spec
29 Oct 2012   #5

Windows 7 Home Premium x64

ugh. I have this same problem. did you manage to solve it? i need help this is driving me mad tbh!!!!!

i dont know how to use the eventviewer :$
My System SpecsSystem Spec
29 Oct 2012   #6
Dave McKeen

Microsoft Windows 7 Professional SP1 64-bit - OEM

Hello QM,

I never figured out from the event log what was causing the Disconnect sound. I removed all devices from the system and put them back one at a time. It took some patience because the sound didn't always play when the culprit device was connected. In my case the culprit device turned out to be a Lexmark USB 3 flash card reader. This reader does not cause the sound when connected to another PC. A Lexmark USB 2 reader does not cause the sound on the PC that is the subject of this post.

Happy hunting!

- Dave
My System SpecsSystem Spec

 How to find Device Disconnect event in Win7 logs?

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