Thread: usb not working

Whenever i connect my portable hdd using usb cable my computer shows the message 'usb device not recognized' it is the same for other usb devices like modem,pen drives etc>Whats the problem with it?

After connecting, go to device manager and try troubleshoot.

mention your OS and system config.

Are you using the computer at work? Are USB devices disabled there?

Finally, do you have administrative rights on the PC?

If you have admin rights, do the following:

Step 1:
a) Start 'regedit'
b) Go to the key \HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servi ces\USBSTOR
c) On the right hand panel, you will see some keys. Check the value of the key called 'Start'
d) Change the value of this key '3'.
e) Exit regedit.

Step 2:
f) Now go to C:\Windows\inf
g) Check the two files "usbstor.inf" and "usbstor.pnf"
h) Select these two files and press ALT+ENTER. It will open the properties window.
i) Click on the 'Security' tab
j) Check whether your user name exists in the list. If not, add it.

@j4k...

wats the purpose of the above steps ??

Originally Posted by newprouser

@j4k...

wats the purpose of the above steps ??

That is how domain admins in the company disable USB in the office machines.

Originally Posted by just4kix

That is how domain admins in the company disable USB in the office machines.

An expert hacker and knowledgeable person needs to be one step ahead.

:lol: were you hinting about yourself

btw 'usb device not recognized' , it seems like a driver error to me, since it does not say sth like USB is disabled. If you are sure about the solution, then fine.

Most of the company domain networks clients are provided with only "powered user" privileges.

Originally Posted by sujithsukrutham

Most of the company domain networks clients are provided with only "powered user" privileges.

whats this "powered user" privileges

have you installed the cable driver or not?/?

1Computer Administrator, or Administrators Group accounts allow full unrestricted control over all computer functions including updating the operating system, adding/removing hardware and drivers, software installation, upgrading, or removal, viewing, altering, creating or deleting of other user accounts, establishing passwords and priviliges for other users, backing up files and folders and restoring backups to fix a corrupted system.

2. Power Users have less privileges than Administrators and may be able to install, update and modify some programs, but cannot do anything that overwrites or deletes any files critical to the operating system; ie: cannot run Windows Update.

Power Users can:

* Run legacy applications, in addition to Windows 2000 or Windows XP Professional certified applications.
* Install programs that do not modify operating system files or install system services.
* Customize system wide resources including printers, date, time, power options, and other Control Panel resources.
* Create and manage local user accounts and groups.
* Stop and start system services which are not started by default.

Power Users do not have permission to add themselves to the Administrators group. Power Users do not have access to the data of other users on an NTFS volume, unless those users grant them permission.

3. Users, or Limited Users have limited privileges. They can run already installed programs, create and files and folders, then delete them, manage their own password, upgrade programs that do not impact operating system files, surf the Net and create email accounts in Outlook or Outlook Express to send and receive e-mail. They cannot run Windows Update, or apply manual program updates to some security programs, nor can they run Windows Defragmenter.


4. Guests have the least privileges of all users. They can run games and programs, read and send browser-based email and surf the Internet.

thanks

ive figured it out its a hardware problem bye the way thanks guys 4r replying

Since the computer is not on a domain, no need to edit the registry to enable the USB feature. in fact it just sounds like a driver issue. Try reinstalling the driver.hopefully that will do the trick

EDIT: Sorry did not see the above reply

I have a USB 80 gig Maxtor storage but it's working anymore.
I don't know what is happening.

But the others 8 gig Pendrive Kingston is ok!

I don't know how to solve the problem. Anyone
can help.

Thanks

the 80 Gb pendrive is a fake chinese product

"USB 80 gig Maxtor storage" I guess you are talking about Hard disk or is it something else

never heard of this maxtor 80gb,,
i think kk is right, it may be a faulty usb hard disk drive..

Originally Posted by Teng

I have a USB 80 gig Maxtor storage but it's working anymore.
I don't know what is happening.

But the others 8 gig Pendrive Kingston is ok!

I don't know how to solve the problem. Anyone
can help.

Thanks

Please give some more details like model no.