No USB port is working!
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Posted by hjordisv on November 26, 2005, 3:30 pm
Please log in for more thread options I just connected my Skype telephone to one of the USB ports on my computer.. and then suddenly the mouse is dead.. and all other USB connected things. I used the phone yesterday (and for many months) without problems. I have restarted severeal times and deleted all usb ports in device manager.. can someone help me? | ||||||||||||||||
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Posted by Paul on November 26, 2005, 4:28 pm
Please log in for more thread options If your motherboard has an ICH5 Southbridge, you've just had a latchup failure. If it fails real bad, it looks like the picture here: http://www.abxzone.com/forums/showthread.php?t=84122&highlight=usb+port The only official recognition of the problem is here: http://tw.giga-byte.com/Motherboard/Support/FAQ/FAQ_456.htm I think there is more to the problem, than that article explains. In any case, you'll need to use your warranty to get it fixed. For some people, the chip doesn't burn that bad. Like yourself, all USB ports stop working, and there is no visible sign on the top of the chip. In more severe cases, the computer will no longer boot and the chip ends up with that burn mark (always in the same place). This is symptomatic of latchup, where a conducting path forms between VCC and GND on the chip. I expect Intel knows what is going on, but I haven't seen any announcements from them. And so far, I haven't seen any postings of this problem happening with ICH6 or ICH7. And if your motherboard doesn't have an ICH5 on it -- what kind of motherboard is it ? Paul | ||||||||||||||||
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Posted by kony on November 26, 2005, 5:31 pm
Please log in for more thread options On Sat, 26 Nov 2005 20:30:04 GMT, no@spam.invalid (hjordisv)
wrote: >Hi
>I just connected my Skype telephone to one of the USB ports on my >computer.. and then suddenly the mouse is dead.. and all other USB >connected things. I don't suppose you then unplugged the phone, turned off the system, then restarted it to see if those worked again, BEFORE making any other changes? >
>I used the phone yesterday (and for many months) without problems. OK, but that has little to do with whatever went wrong. You might have some kind of windows USB problem, or maybe there was too much current drawn on the ports and you blew a fuse. First it needs be established if the system works without this phone connected. >
>I have restarted severeal times and deleted all usb ports in device >manager.. Get the system back to the way it was before you connected the phone, as much as possible, and don't connect the phone yet. Check all USB ports for function with the devices that previously worked. If your motherboard is jumpered to use 5VSB for power (rather than 5V, it might be worded differently like power-on-PS2, ... on-keyboard or mouse, or on-USB, etc), change the motherboard jumpers so it uses 5V and disables the power-on feature. The motherboard manual should provide more detail if it has this feature and how to change it. | ||||||||||||||||
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Posted by hjordisv on December 2, 2005, 8:32 am
Please log in for more thread options I got the system back the way it was before, nothing works.
But there is some connectivity on the USB ports.. there is light on the mouse (but it does not work) and if I plug a USB key, there is a red light on it (but I cannot access it)..usually the light is green. | ||||||||||||||||
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> computer.. and then suddenly the mouse is dead.. and all other USB
> connected things.I used the phone yesterday (and for many months)
> without problems.I have restarted severeal times and deleted all
> usb ports in device manager..can someone help me?