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?

Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

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.
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
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!!

GilesyitAuthor Commented:

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.
GilesyitAuthor Commented:

Fixed it.... KB article 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.


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft Server OS

From novice to tech pro — start learning today.