Unsolved
This post is more than 5 years old
6 Posts
0
22051
October 1st, 2009 18:00
Latitude E6500 USB Power Stops
Hello Everyone,
I have an E6500 Latitude running on Windows XP SP3 with the latest Dell Drivers (8/30/2009) and BIOS installed. I am having problem with the USB shutting off (no power goes through) since I got this laptop. I can't seem to determine the cause besides a bad USB driver. The laptop is built for Vista but I ordered it with XP. There is no specific time, action or application/program that seems to trigger the problem. I determine the problem by using external mouse (generic Dell mouse) and USB thumb drive. I have tried with different mouses but that didn't matter.
In addition to the malfunctioning USB plugs, whenever I try to restart or shutdown the computer to get it back working, the computer can't fully shut down. It either goes to a blue background or the monitor turns off but the power is still on (the power button is still lit). I have to force shutdown every time it happens. I tried different BIOS version, A11 to A14 for this laptop, none of that fixes it. I tried turning off USB features in the BIOS (such as enable powering of USB devices when system is turned off but with power plug in). I even tried turning off hibernate. None of it helps.
Also, in addition to all of the above, I occasionally get BSOD (usbuhci.sys error).
Thanks
:)
superheroboy
1 Message
0
October 27th, 2009 15:00
I have the same problem with losing USB functionality randomly and not being able to shut down without holding the power button down. Have you found a fix for this yet?
hyperation
6 Posts
0
November 3rd, 2009 18:00
Nopes.
hyperation
6 Posts
0
December 8th, 2009 14:00
Hi,
I updated to the latest drivers and BIOS. Right now it seems like the USB plugs only freezes on the right side only and only for USB mouses.
This seems like a problem on the USB Pointing Devices driver. I am also unable to successfully scan for hardware changes once the USB stops working. The process will become unresponsive.
I am still having the problem which the computer can't be shutdown properly; either stays in a all blue background screen or monitor is off but power is still on.
DELL PLEASE FIX IT!
Thanks
:)
hyperation
6 Posts
0
July 12th, 2010 13:00
After a series of driver and bios updates, this is still a problem.
Looks like I have to go chat with some Dell rep and hopefully it is not a hardware issue.
Thanks
:)
hyperation
6 Posts
0
November 1st, 2010 20:00
Still no fix.
misterklub
1 Message
0
November 28th, 2010 10:00
Same problem here, but with a dell desktop computer. For me, all USB devices stop working, like mouse and keyboard.
I can remote into the computer and work with it that way, but that's definitely not a solution. When remote, I can't uninstall devices in Device Manager because it just hangs on "uninstalling device" progress bar forever, and can't shut down/restart normally. Rebooting (by holding down power button) seems to be the only solution for me.
I'm out of warranty now, so can't call unless I want to pay.
Did Dell Support help you at all? Did they determine it was a hardware problem, or what?
One thing I found in searching was a suggestion that the Windows registry had way too many non-present devices in it, so Windows gets hung up in trying to enumerate the devices. The suggestion was to show the non-present devices, disconnect all USB cables/devices from the PC physically, and then uninstall everything in the Universal Serial Bus section, the Mice/Mouse section, the Keyboards section, and the HID section in Device Manager. I did this, and it's been 2 days so far without having the problem again, so I'm crossing my fingers that it won't happen again.
Here is a document that tells how to show the non-present devices:
http://support.microsoft.com/kb/315539
(It's for XP, but I'm using Windows 7 and the instructions worked just fine. Basically, you open a CMD prompt window, set the variable, open device manager from the CMD, go to View > Show Hidden Devices, and then start uninstalling things.)
Here are some notes based on my experience:
Because I had to disconnect all USB devices, and I don't have a PS/2 keyboard or mouse, I had to remote into the computer to accomplish this. If you have remote desktop software set up, then great. If not, you might try one of easy free tools out there, like LogMeIn Free.
I uninstalled all things from USB section, HID section, Keyboards section, Mouse section, Printers section (because I have a USB-connected printer), and the Imaging Devices section (same printer has scanner feature).
It asked me to restart a couple times during that process, so I clicked No until I was finished removing everything.
Then, I shut down the computer, then connected all my USB again, then started back up.
Hope this helps!
hyperation
6 Posts
0
November 30th, 2010 13:00
Thanks for the detail info. I will have to give that a try later on.
You said you didn't have the problem for 2 days so far. What about now? Is it a permanent fix?
Thanks
:)