USB port failure

I have a dell dimension running XP Pro.  The USB devices started failing  ... mostly the computer would not recognize flash drives.  I moved the computer to a different location, installed patches, did basic software maintenance, and returned the computer to its original location and suddenly the USB  ports worked again.  Then suddenly the USB ports stop responding again weeks later.  I notice one port does not seem to be supplying power while others are because USB hard drives will spin up  and XP recognizes,  but aalwaaays installs it as an "unknown device".  

I have gone into the registry and removed ?? devices from mounted devices with no change.  Still no recognition of anything from printers that were working fine to flash drives to battery backup data ports.

Any ideas?   Thanks
palefaceAsked:
Who is Participating?
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.

SysExpertCommented:
1) You may have hardware issues with the port, possibly a device drew more than the allowed 500 ma current and damaged it.

Also intermittent issues could be cabling or motherboard related.

Recheck all USB internal cables ( if any ).

I would block the bad port using masking or packing tape.

I hope this helps

0

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
rettiseertCommented:
Have you tried restoring your Windows using the included restore tool? If this is a software related problem then restoring your sistem may fix the problem.

0
PUNKYCommented:
I hope the system has not come to state like SysExpert said above, but it seems pointing to it. I suggest you reset bios by key command in the link see if it helps:

http://www.experts-exchange.com/Hardware/Misc/Q_21797028.html
0
palefaceAuthor Commented:
I ended up installing a new set of usb ports via a pci card ... it looks like a mobo problem.  I wish i had seen the reset bios via Punky before adding the card .. good info.
0
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
PC

From novice to tech pro — start learning today.