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Windows 7: BSOD from drivers - netgearudsmbus.sys and/or clwvd.sys

25 May 2013   #1

Windows 7 Professional x64 SP1
BSOD from drivers - netgearudsmbus.sys and/or clwvd.sys

Good day I am looking for assistance on how I can clear a persistent BSOD problem where my HP Elite has been experiencing intermittent BSODs over the last month.

The PC was too unreliable so I restored from a month earlier image I had cloned with Norton Ghost.

That image was more stable so I activated MS Driver verifier which then BSOD'd on clwvd.sys, which as far as I can tell is the driver for YouCam.

I removed the YouCam software and driver verifier then BSODed on netgearudsmbus.sys. This I believe is the driver for netgears USB control software which allows connection to a USB printer connected to my netgear router.

I rebooted the PC several times with driver verifier running and neither of the two "faulted" drivers present and received no BSODs.

So I updated the netgear software to its latest version (driver 1.74.27) and reinstalled YouCam v 3.

The next reboot had a BSOD with APC_INDEX_MISMATCH.

The roboot after that loaded fine. The PC is currently running, but will BSOD if I turn driver verifier on again and may of course do so if the underlying problem persists.

I have attached as advised in the BSOD instructions the dumps from the diagnostic tool. There may be 2-3 some older crash dumps from earlier years which are not relevant to this in the zip file but I dont have the tools to read and sort these out.

thank you
Mark P

My System SpecsSystem Spec
26 May 2013   #2

Microsoft Community Contributor Award Recipient

Windows 10 Home 64Bit

Security App
Crashes indicate Norton being a possible cause. Remove Norton and replace with Microsoft Security Essentials to see if it provides more stability. Uninstallers (removal tools) for common antivirus software

Microsoft Security Essentials and Malwarebytes are recommended from a strict BSOD perspective. They do not cause blue screens on the system as other AV products do.

Microsoft Security Essentials, Free antivirus for windows

Malwarebytes Anti-Malware Free

warning   Warning
DO NOT start the free trial of MalwareBytes, unselect that option when prompted.

Tip   Tip
Update and make full scans with both separately.

Virus check
Scan your system with the following:

Kaspersky TDSSKiller - How to remove malware belonging to the family Rootkit.Win32.TDSS (aka Tidserv, TDSServ, Alureon)

ESET online scanner - One-time virus scanner free with ESET online scanner

Check for a BIOS update:
BIOS Version/Date	American Megatrends Inc. 5.15, 25/06/2010
Start up
Keep less stuff at the start-up. Only anti-virus, this helps avoid driver conflicts and improves time to log in to windows.
Troubleshoot a Problem by Performing a Clean Startup in Windows 7 or Vista
How to Change, Add, or Remove Startup Programs in Windows 7

Basic checks:
Please run these tests and report back the results

1. SFC /scannow to check windows for corruption - SFC /SCANNOW Command - System File Checker
2. Disk check for errors on the hard drive - How to Run Disk Check in Windows 7
3. Troubleshoot applications by a clean boot - Troubleshoot Application Conflicts by Performing a Clean Startup
4. Memtest86+ paying close attention to part 3 - RAM - Test with Memtest86+
5. Hard drive test from HDD mfg website - Hard Drive Diagnostic Procedure

Good Luck
My System SpecsSystem Spec
27 May 2013   #3

Windows 7 Professional x64 SP1

Thank you Koolkat77

I will try your suggestions over coming days and report any relevant results.

My System SpecsSystem Spec

27 May 2013   #4

Microsoft Community Contributor Award Recipient

Windows 10 Home 64Bit

Good luck!
My System SpecsSystem Spec

 BSOD from drivers - netgearudsmbus.sys and/or clwvd.sys

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