External USB hard drives lose its connection and work stoppages. __

External USB hard drives lose its connection and work stoppages.      History
 
Windows 7 Ultimate - 64-bit
I installed it on a HP Pavilion, OS, 64-bit, and I have this problem.
People report that it does not occur with Windows 7 32 bit OS.

Problem:
Any brand of external hard drive USB (and other USB devices sometimes) lose its connection and stops working only when copying large files internal drive to external USB drives.
The USB device may appear to work properly when Windows first starts, but later stops working (crashes computer) after the start of large files to copy. You must restart Windows for the USB is working again.
This only occurs when you copy files large files to THE USB port, not on the internal drive. It happened when I synicing my IPhone with Itunes when it started the synchronization of music files.

According to the suggestions I have:
1) updated the BIOS from the websites of the manufacturers.
(2) power management disabled on the USB hub for disks
(3) ensure that the BIOS for Legacy USB is set to.  I don't have this option in the BIOS settings.
(4) this is not a motherboard problem, it is located on three different MB that we use.
Also tried three different USB drives and different cables.

Because I tested with two different computers updated and USB drives, our opinion is that this problem indicates that the Windows 7 64-bit operating system.

Someone knows a solution?

Hi Jh6284,

Thank you for posting.
What is a version of Windows 7 RC or RTM?

You can try to uninstall and reinstall the drivers for the USB ports in Device Manager.

UNINSTALL ALL USB ENTRIES IN DEVICE MANAGER ASSOCIATES.

1. click on START
2. right click "Computer" and select "Properties".
3. on the left side, click on Device Manager.
4. expand the 'USB Bus controllers' category
5. right click and uninstall all THE references listed
6. restart your computer and check if it works.
 
I suggest you go to the Web site of the manufacturer of your and try to install the latest drivers for the chipset. Make sure that install you in compatibility mode there is no driver for Windows 7 64 bit.

Please go through the article below to install in compatibility mode.
http://social.technet.Microsoft.com/forums/en-us/w7itproappcompat/thread/cdd894f8-1ee2-43e5-952b-d04c25779a7f

Kind regards
Technical support of Microsoft-yama.

Tags: Windows

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