I have a computer with ECS nforce3 1.0A motherboard. There are 4 usb ports on the mobo and I have 2 usb ports in front of the computer attached to the motherboard with cable. Some weeks ago I formatted the computer and re-installed win xp sp2. I believe everything worked fine after that (I have moved and not used the computer much during the move so I am not sure) but suddenly the usb ports do not work. The devices get power from them, but windows do not react at all. I have tried a wireless network card for usb, a printer and a usb pen. All the devices work on my laptop.
I have updated the BIOS, tried to uninstall the usb ports in device manager and reinstalled them. I also tried installing Vista to see if that helped, but nothing seems to do the trick. I would really appreciate any help here since this is driving me crazy.
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Re: USB ports suddenly not functioning
I think installing the proper drivers for your motherboard and operating system should work. Find your drivers here (scroll down to see the available drivers and make sure you install the drivers for your operating system) or on the cd that belongs to your motherboard.
Hi, see if you have installed any new devices/hardware to see if its conflicting, often grafics cards conflict usb devices, also just check that in the setup(when you boot up)that the usb ports have not been disabled or usb keyboard support hasn't been enabled/disabled. good luck!!
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Simply UNPLUG YOUR COMPUTER FROM THE POWER SUPPLY. Yes
that’s it! Note that this does not mean just turning off your computer because
modern computers don’t really turn off when you press the power button as the
motherboard still gets power.
The motherboard is where all of hardware of the computer
is connected to, including the USB ports. Sometimes the motherboard needs to be
“rebooted” also because something can go wrong, i.e. all your USB ports
suddenly stop working. The small microprocessor on the motherboard will reload
the drivers and your USB ports should be back to recognizing all devices!
So first turn off your computer using Shut Down or pressing the power button
and then UNPLUG it from the wall outlet. Let it sit for about a minute and then
plug it back in. (VOILA)
I have the same issue. I have 4 Simpletech Signature 250GB drives. They all worked fine at first. After about six months two of them started connecting at USB 1 speeds. It occurs on 4 different computers!!! The post about it being the computer assumes is wrong. How can it work fine for six months and then suddenly change. Also it occurs on different computers. I have submitted a tech support request with simpletech and will post the results.
The cables from the front panel USB connectors have a key in them that will line up with the missing pin on the board's USB headers. Just line up the connectors and plug them onto the board. It doesn't matter if you use USB1 on the board for the plug marked USB1.
This is a USB problem. The pc is telling you that your device will work better if you connect it to a USB 2 port.
Make sure that you have your USB 2 drivers installed. They usually come on the setup disc that you have with your motherboard. If not, use free 'cpuz' program (google it) to determine your motherboard type/serial no, then search for 'usb 2 driver for 'insert your board serial' mobo.
I just fixed this problem on my dv1000. The problem I found was apparently the USB ports on lower right and left side only mounted on the mobo with light soldering and no soldering on the other side of mobo. Due to heat I guessed, they came loose. I opened the mobo (using guide from a pdf file on the net, sorry i forgot the exact guide but you can ask uncle google). I took the mobo out and resolder those two ports with plenty of solder from the top surface only of the mobo as I unable to access the other side. Now they work again like charm. The top right USB is different beast. It is on different card along with S-Video port and apparently in permanent damage.