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Using USB causes restart of computer

post #1 of 32
Thread Starter 
Hi all. I have the machine described by my profile. If I have a USB device attached to the system at bootup time there is no problem using that device. But about 3 out of every 4 times I plug in a USB device (using USB plugs on front of case), I get a restart of my machine. I have used Driver Detective to check for outdated drivers and everything, according to that software, is up to date. It is a very annoying problem because I take an offsite backup once a week using an external hard drive and most time I plug it in the system restarts before I can use it. Any ideas on how I should begin to tackle this problem? I sure could use some help. Thanks ........... Rob
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post #2 of 32
Sounds like a short somewhere. You'll need to follow the cable going from the front USB ports back to the motherboard and check to make sure it is firmly seated, not off a pin or two, make sure it's not pinched, cut, etc. If the cable all checks out, then it may be a bad port or motherboard header. You may also want to check that the mobo isn't shorting out as well. Make sure you have standoffs in the correct spots and no metal is touching the back of the board. Sometimes when troubleshooting a problem like this, it's best to take everything out of the case, start it up to see if there are any issues. If everything works properly out of the case, then it's most definitely a short somewhere, probably between the mobo and a standoff or the case itself.
     
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post #3 of 32
its a short probably same thing happend to my celeron ps it was also in front panel usb i unplugged and plugged it back in and it was fine
Edited by nukefission - 12/13/10 at 11:02am
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post #4 of 32
Need a little more info. What is the device? What port are you plugging it into (front, back, side)? Have you tried installing the drivers directly from the manufacturer's website? I agree with the short as well... if its the front panel, you could have plugged the USB connector for the front in the wrong way on the mobo and have the polarities switched somehow.
 
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post #5 of 32
Thread Starter 
The ports I have been testing with are the two USB 2.0 ports on the very front top of the case. I have tried both ports. The result is not consistent. Sometimes I can plug something in and it works as it should. Other times I can plug in the same device and the machine restarts. I have also had issues with the eSata port on the front. I also have an eSata hard drive enclosure. Sometimes I can hot plug the device into the port and it works great. Other times I can hot plug the device into the port and the system does not seem to recoginize that the device was plugged in. The eSata port, however, has not caused a system restart, only the USB ports have done that. I am really not excited about the idea of taking everything out of my case. I would prefer to try all possible alternatives first.
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post #6 of 32
Try your back ports, if it works then its the wiring and you WILL have to tear some stuff out to rework the front-port wiring on the mobo.
 
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post #7 of 32
Thread Starter 
Hi guys. Been playing with this problem for a while now, without actually dismantling anything significant in my case. I did check the wiring, all looked ok, I reseated the connectors on both ends. For a while it seemed like the problem wasn't happening any more and I thought I had it fixed.

But its back and its weird. For one thing it is not consistent. I will attempt to plug in a USB device and the system will restart. When the system comes back up I can usually plug and unplug USB devices to my hear's content without any problem ................. until I don't do it for a while.

The reason I am writing in this thread again now is because tonight I was going to plug a USB device into one of the front USB ports in my case. All I did was touch the USB plug to the USB port. By that I mean I had not even pushed it into the port yet. As soon as the metal from the USB plug touched the metal of the USB outlet, the system restarted. When it came back up I tried and tried to make it fail again and was not able to make it fail.

Could this have something to do with static discharge or something? Is that even a reasonable guess? If it's a short, then why after it restarts is it fine to plug stuff in and out a million times with no trouble. It seems its only after I haven't used the ports for some time that it happens and then only the first time I try to use it.

Here's another question that's probably stupid. The case is sitting on a shelf that has about 4" legs on it. Does the fact that the computer is not on the ground mean anything. I guess the question relates to my question above about whether this could have something to do with static discharge.

I don't know, I'm groping at straws. Definitely need help from smarter minds than mine.

Help please ................ this one is driving me a little nuts ...............

Rob
Edited by goldberg96 - 12/30/10 at 10:34pm
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My System
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Phenom II Black Edition 1090T ASUS Crosshair IV Diamond 5850 8GB Corsair (4x2GB) XMS3 (7-8-7-20-1T) 
Hard DriveOptical DriveOSMonitor
Corsair 120GB Force Series SSD 2 LG BH10 Blu-Ray burners Windows 7 Ultimate x64 Samsung P2770H 
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post #8 of 32
I think the wiring is dodgy in the case. It's shorting on the case somewhere
post #9 of 32
Quote:
Originally Posted by goldberg96;11838569 
Hi guys. Been playing with this problem for a while now, without actually dismantling anything significant in my case. I did check the wiring, all looked ok, I reseated the connectors on both ends. For a while it seemed like the problem wasn't happening any more and I thought I had it fixed.

But its back and its weird. For one thing it is not consistent. I will attempt to plug in a USB device and the system will restart. When the system comes back up I can usually plug and unplug USB devices to my hear's content without any problem ................. until I don't do it for a while.

The reason I am writing in this thread again now is because tonight I was going to plug a USB device into one of the front USB ports in my case. All I did was touch the USB plug to the USB port. By that I mean I had not even pushed it into the port yet. As soon as the metal from the USB plug touched the metal of the USB outlet, the system restarted. When it came back up I tried and tried to make it fail again and was not able to make it fail.

Could this have something to do with static discharge or something? Is that even a reasonable guess? If it's a short, then why after it restarts is it fine to plug stuff in and out a million times with no trouble. It seems its only after I haven't used the ports for some time that it happens and then only the first time I try to use it.

Here's another question that's probably stupid. The case is sitting on a shelf that has about 4" legs on it. Does the fact that the computer is not on the ground mean anything. I guess the question relates to my question above about whether this could have something to do with static discharge.

I don't know, I'm groping at straws. Definitely need help from smarter minds than mine.

Help please ................ this one is driving me a little nuts ...............

Rob

You have an Asus board, which means it comes with the Quick Connect blocks, that make it so you can insert the connectors wrong, so thats out of the question. Did you use standoffs on the motherboard tray when you installed it? If you didnt, it makes it very easy for the motherboard to short out if it contacts the motherboard tray.

Other than that, I would look for a damaged wire, something contacting the chassis itself, most likely behind the front panel.

Have you been able to duplicate this same problem using the rear USB headers on the motherboard?
post #10 of 32
could be something with windows drivers
boot to bios
then try plugging/unplugging it

if it does not reboot when using the front ports the wireing is fine and may need to reinstall windows

while in windows, try the rear usb ports, if that causes reboots, its definately something to do with windows
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