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USB Device(s) not recognized - & fixed!

post #1 of 16
12/24/09 at 8:14pm
Thread Starter 
... on any of the 4 USB ports of notebook.

What to do next? All devices work fine on another comp. All devices got power from all 4 USB ports.

. happening under XP and Vista,

. tried new installation etc ...

. tried setting USB legacy in BIOS with "enabled", "auto" and "disabled"

. tried disconnecting power from the wall,

. tried cold start (power and battery out, holding down power button)

. tried removing and reinstalling USB controller/Hub

. tried re-flashing/updating BIOS

....... inputs?

cheers ...
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post #2 of 16
12/26/09 at 1:27am
What computer (model). No yellow exclamations in Device Manager? All USB devices not working?
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post #3 of 16
12/26/09 at 6:26am
Thread Starter 
Happening on an old HP N5430 and the old Sager N4750. No USB device is being recognized. USB devices got powered though. Symptom is very much like an external USB device not having enough power feeding through.

Searched the net, and this issue seems to hit every brand every model now and then.

cheers ...
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post #4 of 16
12/27/09 at 11:24am
Thread Starter 
. Reset the CMOS did not help!

. The USB hub controller entry was correct within Windows device manager

. I took the motherboard out and soldering points are clean, not sure about checking the power since I am not good in this area.

. PCMCIA USB port cardbus works! I can use USB devices via this card expansion.

Something is blocking these USB ports ...

cheers ...
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post #5 of 16
12/27/09 at 11:36am
You said devices do get power? Just to please me have you used say a usb flash drive? I only suggest because they really need minimal power. I do expect you to say it does not work but want to confirm.

If driver issue you would get yellow triangle or some other warning in device manager you think? If hardware failure would you also not expect the same or even not showing up at all in device manager? So yea just like you I am lost. Can you disable USB 2.0 and see if that makes it work? Again a desperate stab.

I have been thinking about this since yesterday, but like you not coming up with anything.
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post #6 of 16
12/27/09 at 11:48am
Thread Starter 
Quote:
Originally Posted by powerpack View Post
You said devices do get power? Just to please me have you used say a usb flash drive? I only suggest because they really need minimal power. I do expect you to say it does not work but want to confirm.
Nope

Quote:
Originally Posted by powerpack View Post
If driver issue you would get yellow triangle or some other warning in device manager you think? If hardware failure would you also not expect the same or even not showing up at all in device manager? So yea just like you I am lost. Can you disable USB 2.0 and see if that makes it work? Again a desperate stab.
Devices show up as Not-recognized within device manager, driver installed properly but ending up as not recognizable ...

Disable 2.0 did not make any differences.

Quote:
Originally Posted by powerpack View Post
I have been thinking about this since yesterday, but like you not coming up with anything.
Don't lose sleep over it I know there is a solution somewhere out there.

cheers ...
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post #7 of 16
12/27/09 at 12:13pm
You need the drivers for the device. It shows not recognized so give the device a driver. I have not had to install a driver almost since XP but do it? It sees it is there just does not know what it is. Try with a device where a driver is easy to get. Install the driver then connect device. Trust me I know not that simple but with what you say? That is the next step. Why XP does not already have I do not know but it does not. Are these post XP release devices?
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post #8 of 16
12/27/09 at 2:44pm
Thread Starter 
No go matey. Driver installed before or after makes no difference. I am inclining toward some sort of hardware fubar somewhere. Will take the board out tomorrow and make some measurements at work later.
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post #9 of 16
12/27/09 at 6:40pm
Bump for a matey! I am dumbfounded? I feel like nincompoop (fake German) short for Dummkopf (also American).
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post #10 of 16
12/27/09 at 8:25pm
I had this problem before, the device was not recognized in my laptop but it was recognized in my dad's. Both laptops running Win7 Home Premium.

The problem is... I don't remember if the problem got fixed after a reformat.

In my case only 1 device was not recognized, all other devices were working fine.

Cheers!
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post #11 of 16
12/27/09 at 8:43pm
I would try a USB Hub with a external power supply.

It seems to me the USB power for the laptop is failing/failed
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post #12 of 16
12/28/09 at 6:13am
test post the system is not working?

Edit: Well it worked? I had already PM'd TWV. Anybody try and quote? HTML code is all screwed up. Most threads display fine and looks like posting works also. I could not start a new thread in the general section display all whacked. Pleae fix qhn. We need you!

Last page of "health care" can't even be read forget posting, display is messed up.
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post #13 of 16
12/28/09 at 9:27am
What device are you trying to attach?
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post #14 of 16
12/28/09 at 9:42am
Q, did you check out any of these suggestions.
http://www.google.com/search?q=hp+la...rlz=1I7GGLJ_en
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post #15 of 16
12/28/09 at 1:28pm
Thread Starter 
Quote:
Originally Posted by dave-p View Post
I would try a USB Hub with a external power supply.

It seems to me the USB power for the laptop is failing/failed
Did that with no change. I agree that the internal USB power supply is failing big time.

Quote:
Originally Posted by Steve View Post
What device are you trying to attach?
From a simple mouse to external drive.

Quote:
Originally Posted by saugen48 View Post
Q, did you check out any of these suggestions.
http://www.google.com/search?q=hp+la...rlz=1I7GGLJ_en
Did that already Gene, thanks. Even looked for info from outside English speaking forums.

cheers ...
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post #16 of 16
1/13/10 at 7:07pm
Thread Starter 
Update:

I was able to fix the problem by applying new soldering to the USB port contacts on the boards!

Cause was probably from plugging in some USB device(s) and waking up from sleep. This was from XP SP2 (my suspicion).

Everything now works!

cheers ...
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