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KB976972: Fix Windows 7 Copy File Error On Nvidia USB EHCI Chipset

If your Windows 7 consistently freeze or crash when copy files to USB hard disk or USB flash drive, download and apply the latest Microsoft Hotfix filed under article ID 976972 might be the solution. However, this KB976972 hotfix only applicable to computer that uses:

  • 32/64-bit Windows 7 or Windows Server 2008 R2
  • NVIDIA USB Enhanced Host Controller Interface (EHCI) chipset
  • at least 4GB of RAM

As the Microsoft hotfix is not applicable to everyone, so it is not explicitly published to Microsoft Download Center or included in Microsoft Update (delivered via Windows Update program)
Microsoft hotfix will only included in Microsoft Update (as service pack) when it is known to be safer for the majority.

How to get the download link of Hotfix KB976972?

Download Microsoft Hotfix KB976972 to fix Windows 7 and Windows 2008 R2 copy file problem on computer system using Nvidia nForce chipset.Browse to article ID 976972 and click the View and request hotfix downloads link appears after the title. Alternatively, click here to request Hotfix KB976972 for 32/64-bit Windows 7 and windows 2008 R2. Then, Microsoft will email the Hotfix download link to your registered email.
As the hotfix information might change over the time, so it’s safer to refer the hotfix download page for up-to-date information before applying it.

What about solution to Windows 7 copy file error happens on non-Nvidia Chipset?

While keep waiting for another possible hotfix from Microsoft (or probably a latest Kaspersky IS 2010 patch), you can try these:

1) Before starts copy files to USB drive or other location, try not to include files that use non-Unicode characters in file name, particularly those East-Asian characters (e.g. Chinese, Korean, Japanese).

2) Don’t include files that use long file name with some punctuation marks in it.

3) After excluding those files that potential crash / freeze Windows 7, you could start copy files to USB drive or any location you like, be it using Windows Explorer or RoboCopy command bundled with Windows 7 installation.

That is what I have encountered last week and the temp. fix is workable suggested here is good for my Core 2 Duo / Intel P965 chipset system. Good luck.

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  1. Typedink 03-12-09@06:40

    I want to thank you for posting this. This fixed the issue I was having with file copy crashes, BSOD, and USB issues. THANKS!

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