USB ports dead

March 20, 2009 at 12:19:43
Specs: Windows XP, ntel Pentium 4 3ghz. 1GB RAM. MB Gigabyte GA-8IPE1000-G (and PCI card USB ports). Win XP SP3
Elements permanently connected to my computer with USB:
1.- laser print
2.-Injection print
3.- Mouse
4.- Scanner

Elements temporaly connected to my computer with USB:
5.- HD external
6.- Nokia n95
7.- Different USB memories
8.- Canon camera
9.- Pocket acer N50 premium.

What happens??
Everythink Works… but when I connect the Pocket Acer to USB port, ALL PORTS doesn’t work at the moment.

I Try to (cronologically):
1 System restore
2 comproving that all ports in BIOS are “enabled”
3 Uninstall all USB drivers and reset.
4 Change the setting: devmgr_show_nonpresent_devices =1, to see USB hidden elements, unistall and reset.
5 Update to Windows SP3
6 Clean temporaly files of the computer
7 External antivirus (karspersky)
8 Update motherboard drivers
9 Connecting elements Orly to PCI card
10 Deactivate the automatic shutdown of all USB controllers.
11 Linux Knoppix live doesn’t recognize usb ports. (and then there is no problema with de XP)
12 Update the Bios

In the USB connections still pass voltage (the Light of the memories, for exemple, are lighting) BUT nothing Works¡¡¡

I’m deseperate, what can i do?. Lots of thanks.

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March 20, 2009 at 13:45:30
"11 Linux Knoppix live doesn’t recognize usb ports. (and then there is no problema with de XP)"

Try to power down system. Remove ac plug. Press power button a few times. Replace ac plug. Power up system without any usb devices. Attach any but the acer to usb. Does it work?

I suspect acer is finally drawing too much current, shutting down the port. (???) though built in protection like a simplified circuit breaker of sorts.

There is a way to view the current used on a usb device in system hardware.

"Best Practices", Event viewer, host file, perfmon, antivirus, anti-spyware, Live CD's, backups, are in my top 10

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March 20, 2009 at 14:19:12
Each and every USB port directly connected to the GA-8IPE1000-G mboard and any PCI USB controller card in a slot on it can supply up to and inc. 500ma of current, but ports in a hub connected to only one USB port directly connected to the mboard or the PCI card often cannot, many devices do not work properly when plugged into such a hub, and in some cases you may have an IRQ sharing problem you need to fix - if you do have an IRQ sharing problem and you fix it, reloading the USB drivers is not enough - you must re-load the USB stack. .

See response 3 in this:

External hard drives always require the max 500ma current be available from USB (or firewire) ports they plug into. Printers, scanners, multifunction printer/scanner/etc. devices often require more current than most other devices.

USB (and firewire, and PS/2 ports, and serial ports, etc.,etc.) requires accurate 5v power.
Your power supply must be working correctly.
Failing power supplies are common and can cause your symptoms.
Check your PS.
See response 4 in this:

If you don't see any obvious symptoms there's something wrong with PS, sometimes the only thing wrong is the chip that controls the PS inside the PS is out of whack and doesn't respond to changes in load on it properly. The only way you can find out whether your PS has that problem is to try connecting another known to be working fine PS to your computer.

If you have one or more PCI-E X16 video cards installed, you must make sure the PS has at least the minimum capacity required to handle a system with that or those video cards installed. A common mistake people are making these days is to not take that into account. If your PS capacity is 600 or 650 watts or more, that is enough to surpass the minimum requirement for any current high end PCI-E X16 video card, even one that is a X2 card (two video chipsets on one card) or even two cards with a single video chipset in two slots.
If your PS capacity is under 600 watts, you can find the minimum PS capacity, and, often, more important, the minimum current capacity at +12v your PS must have in the specs for the video card model, on the card manufacturer's web site - it's often listed under system requirements. If you don't find that, any card with exactly the same video chipset, including any letters, e.g. X1950 XT, or Pro, or XTX, has very similar minimum PS requirements.

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March 20, 2009 at 14:28:01
Gigabyte motherboards use a different pinout for the USB headers you use for add on front or rear USB ports. If wiring incorrectly nothing will happen UNTIL you connect a device.

Then you can burn out the USB controller or device or both.

Not sure if this is your problem or not.

Many cases come with a connector designed to work on the majority of motherboards and will connect to the Gigabyte too. Just won't work.

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March 21, 2009 at 11:17:57
Apparently there are two versions or revisions of the GA-8IPE1000-G mboard - 3.x and 4.x.

Version or revision 3.x has two firewire headers on the mboard as well as two headers for pairs of USB ports.
The USB headers are yellow - one of the firewire headers is right beside the USB headers - it has the identical 9 pin on a 2 row 10 position header arrangement as the USB headers.

If you mistakenly connect the wiring connector(s) for USB to that one firewire header, or visa versa, you don't have a problem until you plug a device into the port the wiring is for, but when you DO plug in a device into the mis-wired port, ALL HELL BREAKS LOOSE!
You can damage the circuits for the USB or the firewire, AND the device you plugged in, and possibly the mboard otherwise, in a short time!!

See your mboard manual!

Thesame thing can happen on other mboards that have both USB and firewire headers - e.g. Asus ones

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