swmelon Posted August 20, 2006 Posted August 20, 2006 Some of the USB ports stopped working maybe a month ago. Now all the USB ports are not working on my computer. Looks to be it's the MB's problem. I tried pretty much everyting I could do. I reinsalled USB drivers in hardware manager, newly installed windows xp/ windows 98 SE, reset my BIOS, and installed USB-to-PCI card, but still not working. In device manager it says "unkwon device" for any usb devices. In addition, there are two USB Root Hub and two OpenHCD USB host controller installed without any problem in the device manager. I also measured the VCC voltage using multimeter. It was 5V which is normal. Does anyone have any idea how to fix this without having the MB replaced? Thanks. My specs are: Sempron 3100+ Paris (OC'ed to 2.4 Ghz when the problem occured) DFI Lanparty UT nf3 250gb 400W Antec PSU Windows XP SP2 Quote Share this post Link to post Share on other sites More sharing options...
Barney Fife Posted August 20, 2006 Posted August 20, 2006 Are these the USB ports at the back of the case, the ones physically attached to MB? Or the "Connected by wire" USB ports at the front of case? Or, are all USB ports are out of order? PS. Please put your whole system spec (In Detail) in your signature, as this is the forum rule. Put as much info as you can in your sig in detail including the BIOS version. Good Luck. Quote Share this post Link to post Share on other sites More sharing options...
swmelon Posted August 21, 2006 Posted August 21, 2006 Sorry I now have the detailed specs in my signature. All of my USB ports do not work- Front and Rear. And even the USB ports in the PCI card do not work even though I successfully installed the driver for the PCI card. The PCI card I had installed was Nexxtech 2-PORT USB 2.0 PCI Adpater Card. Quote Share this post Link to post Share on other sites More sharing options...
Barney Fife Posted August 21, 2006 Posted August 21, 2006 Swmelon, Welcome to DFI-Street. Lets start this by attacking problem first, take out that extension (Adapter) card and clear CMOS. Hold on and don't put the extension card back in just yet. Lets see if USB ports come back to live. Take battery out for few minutes or reset CMOS jumper, either way you know how will clear CMOS. Post here the results. Good Luck. Quote Share this post Link to post Share on other sites More sharing options...
swmelon Posted August 21, 2006 Posted August 21, 2006 Hi Barney, Thanks for your warm welcome and quick replies. I've already went through clearing CMOS using both methods- the jumpers and battery. That didn't do anything either. My BIOS right now is on Optimized Default setting. Quote Share this post Link to post Share on other sites More sharing options...
Barney Fife Posted August 21, 2006 Posted August 21, 2006 Hi Barney, Thanks for your warm welcome and quick replies. I've already went through clearing CMOS using both methods- the jumpers and battery. That didn't do anything either. My BIOS right now is on Optimized Default setting. You're welcome sir. Did you take out the USB adapter card before clearing Cmos? It may be conflicting with On-board USBs. Also if you have Keyboard USB and or mouse USB (Something similar to these) enabled, disable them. Quote Share this post Link to post Share on other sites More sharing options...
AsAs1n8eR Posted August 21, 2006 Posted August 21, 2006 Maybe by some chance the USB disabled themselves?Try a nother BIOS... Quote Share this post Link to post Share on other sites More sharing options...
swmelon Posted August 21, 2006 Posted August 21, 2006 I changed my BIOS to 10/5/04 version and cleared CMOS again without the adaptor card plugged in. But it won't do anything. Still the same problem.. Quote Share this post Link to post Share on other sites More sharing options...
wevsspot Posted August 21, 2006 Posted August 21, 2006 Use the Windows Device Manager to open up your device listing. Change the view to "resources by connection". Expand the Interrupt request (IRQ) key and check to see if Windows has assigned an IRQ to your USB Universal Host Controller. If Windows has assigned an IRQ it means that the ports are probably working but you have a driver issue that needs to be resolved. It's highly unlikely that all of your USB ports have failed at once (or even over a short period of time). While you're looking at the IRQ assignments see if you have any conflicts between the USB Universal Host Controller and any other hardware in your rig. Report back on your findings. Cheers. Quote Share this post Link to post Share on other sites More sharing options...
swmelon Posted August 22, 2006 Posted August 22, 2006 i've checked the IRQ assignments with the device manager. It shows that there are no conflict. However, one of two "Standard OpenHCD USB Host Controller" have the same IRQ 22 as "NVIDIA Network BUS Enumerator" and "NVIDIA® nForce Audio Codec Interface". Also "Standard Extended PCI to USB Host Controller" and "NVIDIA nForce3 250 Serial ATA Controller (v2.6)" are both assigned to IRQ 21. Is this normal? Quote Share this post Link to post Share on other sites More sharing options...
Capt Proton Posted August 22, 2006 Posted August 22, 2006 I had a problem with USB not working. Turned out I had one of my internal USB leads on the header incorrectly. I know it's the same as, "Did You Plug it In", but I just thought I'd mention it. Quote Share this post Link to post Share on other sites More sharing options...
wevsspot Posted August 22, 2006 Posted August 22, 2006 Some IRQ assignment sharing is normal when using the Windows OS. And usually it's of no concern in most cases. What is strange is that Windows is detecting that you have USB controllers (if you were dealing with a complete hardware failure Windows probably wouldn't be detecting that particular piece of hardware). Jump back to BF's post in #6 and follow his recommendation. But in addition, turn off system restore, use the Windows device manager to uninstall all existing USB controllers and devices, use Add/Remove programs to uninstall any USB device drivers or support software. Reboot Windows and run Windows Repair from your original OS installation disk. That should do the trick. Quote Share this post Link to post Share on other sites More sharing options...
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