SBS 2008 usb drives reported as not recognized or malfunctioning

SBS 2008 usb drives reported as not recognized or malfunctioning....

I've a Proliant ML115 G5 running SBS2008, 4 GB RAM, Mirror RAID...

I backup to a USB 1TB drive which has worked fine for 6 or so months untill last week. The StorageCraft software suite reported it could not find the USB backup drive.
I have tested the drive on another machine and it works fine. The I tried a different USB drive on the server and that failed to be recognized! There does not appear to be any updates to drivers.

One thing I did notice is while was unistalling the USB controllers to re-install, I uninstalled the "Standard Enhanced PCI to USB Host Controller" the USB backup drive was recognized by the system, the system then reported that the device would run faster on a HIgh Speed USB Port!!!
When I reinstall the "Standard Enhanced PCI to USB Host Controller" the unrecognized device problem comes back.

Any ideas anyone?

Regards
Ian
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GilesyitAsked:
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GilesyitAuthor Commented:
Hi,

Fixed it.... KB article 817900

http://support.microsoft.com/kb/817900

Method 3 worked for me via a Remote Desktop Connection as the Keyboard and Mouse stop functioning.

I also unplugged all USB devices before going through the procedure. On restart I connected everthing up and all is working.

Ian
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SemperWiFiCommented:
Sounds like a simple communication error. You might check your event log to confirm if registered. I would try reinstalling your chipset drivers (with the most recent drivers of course) and making sure you have the most up to date BIOS.
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subliferCommented:
As Semper said, install the latest chipset drivers (downloaded from HP of course), BIOS would be nice but not always feasible with a server...

A few other things:
- Check the USB cable that you're using, if it is longer than 10 feet then communication errors can happen.  
- Connect it to that other PC and verify that it is running at full speed.  The controller on the drive may no longer be reporting itself properly.

Good luck
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GilesyitAuthor Commented:
Hi, I've searched HP site and can't find anything about chipset drivers for Server 2008 x64.... unless HP don't call them chipsets!!

http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareIndex.jsp?lang=en&cc=us&prodNameId=3683706&prodTypeId=15351&prodSeriesId=3683705&swLang=8&taskId=135&swEnvOID=4024

Ian
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GilesyitAuthor Commented:
Hi,

Found some drivers on the nVidia site and installed them but made no difference to the USB issue, they have however improved the performance of the server!!

I'll be researching more today so if i find enything I'll post it.

Thanks for your help so far.
Ian
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