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Windows 7: After install, USB devices ID'ed but can't be accessed

25 Oct 2009   #1
DDLUIGI

Windows 7 Home Premium
 
 
After install, USB devices ID'ed but can't be accessed

Installed Windows 7 64 bit operating system yesterday. This was an upgrade from Vista. The computer will recognize anything that is connected to the USB ports, but it is unable to access the device. For instance, it shows my Seagate external hard drive but I cannot access it. It is all the same for any external device, although USB mouse is functional. New drive letters DO NOT show up under Computer. It also recognizes my Dell printer, but again it cannot access it.

Now here is something very serious... after I take the external hard drive off of this computer and put it on another, the other computer will not recognize it. I have 4 external hard drives, all of them were working just before the Windows 7 upgrade. Now none will. Another thing, the system will not even access flash drives. I have tried many. Again, it shows they're there, but cannot access them nor give them a drive letter.

I need to be very clear on this... even if I put a brand new, right out of the box, drive on this computer, it will not find the device. Is it possible that an operating system upgrade can damage a USB device?

Performed all diagnostic tests supplied by Dell, Microsoft, and Seagate. On my Seagate drive, there was an error for "generic short test" and "generic long test". On my printer, "no driver present", although all new drivers are loaded.


My System SpecsSystem Spec
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25 Oct 2009   #2
kegobeer

Windows 7 Ultimate x64 SP1
 
 

Have you installed the latest BIOS for your desktop? 1.0.13 was released to support Windows 7.
My System SpecsSystem Spec
25 Oct 2009   #3
DDLUIGI

Windows 7 Home Premium
 
 

Hi Kegobeer,

Yes, the latest bios, 1.0.13, was installed yesterday.

Thank you for your assistance!

Dennis
My System SpecsSystem Spec
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25 Oct 2009   #4
kegobeer

Windows 7 Ultimate x64 SP1
 
 

Have you installed any of the Dell drivers for your desktop?
My System SpecsSystem Spec
25 Oct 2009   #5
DDLUIGI

Windows 7 Home Premium
 
 

Hello again,

Yes, sir! All applicable Dell drivers are installed. This was also done yesterday.

Again, thank you!

Dennis
My System SpecsSystem Spec
25 Oct 2009   #6
kegobeer

Windows 7 Ultimate x64 SP1
 
 

Did you do an in-place upgrade? If so, you should consider doing a clean install instead. Quite often an upgrade just doesn't work like it should.
My System SpecsSystem Spec
25 Oct 2009   #7
DDLUIGI

Windows 7 Home Premium
 
 

Hi Kego,

If I can not resolve these problems by tomorrow, I will certainly try a clean install. The major problem is that I can not backup the computer since I can not access any external drive.

Thanks again,
Dennis
My System SpecsSystem Spec
25 Oct 2009   #8
kegobeer

Windows 7 Ultimate x64 SP1
 
 

If you have space left on your drive, create another partition for your data and then copy the important files to the new partition.
My System SpecsSystem Spec
25 Oct 2009   #9
DDLUIGI

Windows 7 Home Premium
 
 

Hi again,

Thank you for that idea. When I went to set up a new partition, I was prompted to shrink the original one. The system started searching for the amount of unallocated space it could use. When done, it only showed that 400 MB would be the new size. It also went on to explain the reason being unmovable files.

Thanks,
Dennis
My System SpecsSystem Spec
25 Oct 2009   #10
DDLUIGI

Windows 7 Home Premium
 
 
New info on problem

I think I have narrowed down the problem, but have not found a solution as yet. All external USB devices that were connected to the system during the Windows 7 upgrade no longer operate on any computer. In my case, this is a 1.5 TB drive, a 640 GB drive, and a Dell printer.

It gets worse. . . USB drives that were NOT connected to the system during the upgrade, including flash drives, are prompted to format the disk. The formatting always fails. "Windows is unable to format this drive". If I format the drive on a different computer, and then place it back into the Windows 7 system again, it will still prompt to format the disk. Again, it will fail.

I feel like I am in the middle of a bad dream. I picked a bad day to give up drinking! The 1.5 TB external drive has everything that I have ever created, including all business transactions and contacts. I am out of business tomorrow, unless I get this drive working.
My System SpecsSystem Spec
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 After install, USB devices ID'ed but can't be accessed




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