if you have too many devices on your usb system, you may be drawing too much power than it can handle. add a usb card to plug in those extra devices.

One USB at a time and 600W PSU. Like I said it has something to do with being so static. I managed today to get it up and running, but will see for how long. I will perform some testing and see what happens.

Technophobe, speaking as a borderline Luddite compared to most here, I'd just like to say you've just saved me tearing all my hair out and having to tell my work I've bust my memory stick. Thanks a million

Hey all

I have like USB Bluetooth dongle, and its been work great ever since i got it.
Last night when i went to use it, it said that it wasnt recognised and had malfunctioned or something

This is the case for both my laptop and pc. I have tried disconnecting everything, waiting 30 mins and reconnecting, unfortunetly it hasnt worked for me, im still getting the same message.

Any help or ideas at all would be tremendously appreciated.

Thanks, Leanne x

All, I tried every cure listed on the web to fix this on my pc. Initially all ports worked then suddenly the dreaded error message that all of the malfunctioned.

I read one post about the incompatability of the case and the board on some pc's and opted to buy a pci to USB card. ( $13.00)

I now have four functioning ports and wish I would have done this sooner to save time. Just so you know.

I apologize if I've upped this thread from the dead, but I wish I could say this fix helped me. Unfortunately, it didn't seem to. Since it seems this is the only tech place with this issue I could find on Google that doesn't require payed registration, I felt like asking this here.

I have an HP Pavilion zv6000 laptop, purchased in the late summer of 2005. For the last two years the USB ports have worked relatively fine, but then earlier this month I've been getting the "USB Device Not Recognized" pop-up bubble. I find that only three of my devices seem to work well. The printer works, the USB mouse works, and a small external laptop HD works (though it runs slow (I suspect it's stuck on USB1.1), it is still recognized), but two external HDs (both powered with their own power devices) I've been using for the last year, and an iPod fail to be recognized anymore. I've tried all peripherals in all the ports, but only the mouse, printer and the laptop HD work in any of them. I've tested out the HDs and the iPod on other computers, and they work fine.

I think I have the same problem as Technophobe, in that it seems that devices that support USB1.1 work, but the ones that require USB2.0 come back as 'malfunctioned', even though the ports themselves should be USB2.0.

I've tried a number of "fixes" found on Google:
1. I uninstalled all USB devices in the device manager, and then restarted, but that didn't do anything. I tried it again in safe mode, but again that does nothing.
2. I reinstalled Windows XP on my machine, and - to my extreme disappointment - the problem still comes up.
3. I tried editing the registry. Half the suggestions don't seem to correspond with my registry (I don't have the keys), and the others don't seem to do anything.
4. I've looked in the BIOS, and haven't found anything about USB or peripherals. It's very simplified.
5. I looked for drivers, but the drivers I have now are all standard to Windows. HP doesn't offer any additional software for it, and I've used programs that analyze the drivers, and those claim the drivers are updated. The motherboard is an HP-brand motherboard, so I don't know where to go for additional USB drivers for it (if I would need them at all).
6. I've tried looking for Windows USB2.0 drivers, but I seem to be up-to-date with those.
7. I tried this quick fix mentioned by Technophobe. I turned my computer off, unplugged the power and removed the battery. I let my computer stay this way for thirty minutes, and it didn't do anything. I tried different means of doing it. I removed the battery and left it on AC power. Nothing. I tried running it only on battery power. Nothing. I am now draining the battery, and seeing if that'll do anything.

Technophobe's solution made me think that the reason these USB problems started popping up could've been what I did earlier this month when my computer froze. I had closed the lid, and it usually goes to standby; However, when I went to check on it a few hours later, it was still running and had frozen. I tried pressing the off button, nothing. Unplugging the AC power did nothing. So I unplugged the AC power and removed the battery, causing a sudden power loss for the laptop. Restarting it with the battery and AC back in place fixed that problem. I probably sound horrible for doing that, but I didn't feel like I had any other alternative.

It was not long after that, that these problems started to pop-up.

So, I'm pretty much stuck. I don't want to send it in (I've had bad experiences with other companies where I've sent things in, and I have very little extra money for it), but I'm starting to run low on ideas...

Although about their printers, the advice here is in many ways generic re devices and USB:

http://h10025.www1.hp.com/ewfrf/wc/f...cname=buu01860

To those who have reformatted, I truely empathise. There's nothing worse than killing a system that had conformed to my preferences of months of use, only because I can't fix a problem with the OS. So, to the troopers who went before me, and reprted back that this horrible method did not work, I thank you (with my hand over my heart for my fallen comrades ). I've got the same issue, and by Jove, it seemingly appeared overnight (anyone else?). I came across an article about restore points and external USB drives (which many sticks now behave as, these days). It was in my hurry for an answer, and it's lost in the dust, but I think there might be an answer there (somewhere). MSHEP, your story is inspiring. I might just need to upgrade my drivers to the SiS brand (if I understand you correctly). I tried to reinstall the USB drivers that came with my motherboard's disk, but it didn't work. It said it couldn't find the device. When I tried to update from Device Manager, using the .inf from the CD, it didn't work either. I might not know what I'm doing. I've got other problems, too. Now, my Windows Installer is broken. So many problems in a row. I think, for me, there is a deeper culprit.

<cut>

Can you tell me the steps you used to do this. I have the disk that came with my motherboard, including the installation .exe for the USB drivers, but it didn't work. I'll try to get back with a specific error message.

you're comments are the only light at the end of the tunnel so far.

spatty

Dear technophobe,

I've had this problem for a week

I tried your way and it realy worked

thanks

go to your usb's anufacturers website and see if they have a fix for it..
this happened with my ipod shuffle (error 1480) i went to google and typed the error , and they sent me to the apple , they gave me a software to repare it and
bamm!!.. good *** new.

same thing my USB 2.o was giving me unknown device.

Did you find a resolution to this problem?

I'm having the exact issue with SiS controllers on a Shuttle XPS SS51G Windows XP Pro SP2. All USB ports work properly unless I plug in a device classified as a "mass storage device". They all come up as unknown and malfuctioned. The drives are fine and work on other systems.

Reading through this thread takes a lot of time, but there is a lot of good info here. In addition, i would say that most of the tricks and ways to repair usb have been mentioned here in this thread.
The most popular one being technophobe's post, here:
http://www.techspot.com/vb/topic23630.html

The bottom line is that often if you unhook all your usb hardware, remove all your usb drivers, let the pc sit for a while, turned off, quite a while sometimes, like a half hour, then boot up and re-install your drivers, that will take care of almost all issues.
There is one item i see, though, that hasnt been mentioned. I have a few pcs and one pc i have i have trouble quite often when i plug a usb2 hard drive into the usb2 ports on the front of the pc. Yet when the same drive is plugged into the back of the pc then all is well. Now its the same usb2, direct to the mobo, so dont ask me why but it works fine in the back so i leave it there and plug other items in the front, thats how weird usb can be.
Another thing that i dont think i have seen mentioned here, and if it has then please forgive, but sometimes it just pays to install a usb2 pci card. Sometimes that works better than using the usb on the mobo.
And i have even see usb problems disappear by turning the pc off, unhooking the pc from the wall or wherever its main cord is, letting the pc sit for a while and then push the case on\off button in and hold it in for a few minutes. What that does is clear the motherboard of any electrical charges in it and somehow i have seen that help with usb and other issues.

Very good guide to USB issues with Sis boards and XP, look here,

www.usbman.com/WinME%20USB%20Guide.htm

There have been issues with Sis and WinXP SP2....

From what I see here people, you are barking up the wrong tree. It isn't windows you should be working on fixing, What you need to look for, is a way to restore the usb device to factory default. Most likely, and the origional poster will have to confirm this.. The USB flash drive was removed without shutting it down using "safely remove hardware devise" and it fubared something on the device that allows it to connect to usb 2.0. Try the USB drive in a USB 1.1 port. (like on an older computer) If it works there.. that is the problem. Buy an older usb card for 1.1, buy a new flash drive, or keep looking (such as I am) to see if there is a way to restore the defaults as it came out of the factory. My theory is if something fried, it should not work at all, since it does work on usb 1.1, then perhaps there is just a setting I can fix with a flash update? All I have to do is find it or find out that it does not exist, and there is something on the hardware that is fluffed up.

Pretty sure nobodys barking up the wrong tree, lol. I believe that there are different issues with different chipsets on different mobos and different electronics and different chips on pci and onboard usb chips. So there are different solutions.

Another thing to do is try the usb2 product on, simply, another usb2 outlet, wether on the same pc or another pc. And there is certainly nothing wrong with trying it on a usb1.1 connector.

As for getting back to factory default i imagine its a simple matter of reformatting the drive, wether in a usb1, usb1.1 or usb2.0 port. That is, if its not broken in the first place! Some of these drivers can be easily broken.

Sorry, that will not work, been there, done that, including a llf (low level format) it comes up as unknown device when connected to USB 2.0.
Like I said earlier, it works fine in USB 1.1
Even tried going to computer management and remounting media to the drive, didnt work, soooo
as I stated, it is either a firmware flash of the drive that I need to find, or use the drive only in USB 1.1
The problem is in the USB Flash drive itself. I'm just glad that it has been made to work with 1.1 as failsafe. I just wonder, if there is a flash utility to restore factory defaults. I'll keep looking, and post if i find one.

conversation with an expert in flash drives from www.eprovided.com
**quote**
eprovided: I think it has circuit damage now.
averybaddog: that is what i was thinking too. is there a way to fix that or just buy another flash drive?
averybaddog: I was going to look for a firmware flash
eprovided: We can recover data from them if needed but not worth fixing.
averybaddog: no data, i moved it and low level formatted it.
averybaddog: so the question was, just to see if i could get it working again, for the sake of learning to do it
eprovided: you can try
averybaddog: thanks.
**end quote**
So since the flash drive was like $10. I can just buy another to play with on the 2.0 port, or just continue using the one i have at 1.1 speed. OR. play with flashing to see if it can be recovered (usb 2.0 functionality)

Dude im sorry but...... that makes absolutely no sense.

If you let the computer sit there for a while , this is what happens.:

The pc remains scanning for any driver software , until she finds the Microsoft driver
when the pc finds the driver ... it will eventually install it . You are not helping at all by
giving tips about a solution found while troubleshooting a different brand. Stick to the original
poster's peripherals and find out the solution based on those parameters .

I think that the best way would be by going to the manufacturers site and obtaining a fix for it. Or at least check the FAQ in search for known compatibility issues with windows XP.

Thats one solution....... the other one is pretty much covered on technophobes post.

sorry, I was thinking it was a usb flash drive, not a usb external hard drive. My bad.