HP USB ports. HELP

RobertR. · Mon Oct 16, 2006 10:14 pm

I have a HP pavilion a210n and the front usb ports have been working fine since i ever bought it. Then two months later, the front USB ports stopped working suddenly. I have checked the cables in my computer and they all seem to be connected but just to be sure i gave it a light push. What could be wrong?

My motherboard details:

Motherboard ID: 31891.HPD.0000.D.0304251530
Motherboard name: TriGem Glendale
RAM: 512 MB

Tue Oct 17, 2006 12:27 am

What does device manager show you?

Tue Oct 17, 2006 1:26 pm

RobertR. wrote:I have a HP pavilion a210n and the front usb ports have been working fine since i ever bought it. Then two months later, the front USB ports stopped working suddenly. I have checked the cables in my computer and they all seem to be connected but just to be sure i gave it a light push. What could be wrong?

Blown fuse? The USB port supplies power; test using an externally powered hub or other device (e.g. external HDD/CD/DVD that uses mains) - if that works you may have a blown fuse on the motherboard.

RobertR. · Tue Oct 17, 2006 10:09 pm

In device Manager it says:

Intel(R) 82801DB/DBM USB 2.0 Enhanced Host Controller - 24CD
Intel(R) 82801DB/DBM USB Universal Host Controller - 24C2
Intel(R) 82801DB/DBM USB Universal Host Controller - 24C4
Intel(R) 82801DB/DBM USB Universal Host Controller - 24C7
USB Mass Storage Device
USB Printing Support
USB Root Hub
USB Root Hub
USB Root Hub
USB Root Hub

Blown fuse? The USB port supplies power; test using an externally powered hub or other device (e.g. external HDD/CD/DVD that uses mains) - if that works you may have a blown fuse on the motherboard.

I have tried an external harddrive that uses power from the outlet (not the usb port) and it did not show up . I have also tried a travel drive that is self powered (through the USB port), and it still did not work.

Please reply ASAP.

thanks in advance.

BiosMan · Wed Oct 18, 2006 1:20 pm

I assume you have rear ports (from your initial posting)...do they work?

RobertR. · Wed Oct 18, 2006 9:36 pm

Yes, my rear USB ports are working fine. I have no problems with them.

BiosMan · Thu Oct 19, 2006 12:34 am

Can you tell which controllers they are connected to?

Where is your USB 2.0 Root Hub?

RobertR. · Fri Oct 20, 2006 10:47 pm

I do not know which controller they are connected to. And the USB (2.0) hub have two in the front and four in the back. I have the page form hp that have my motherboard specs: http://h10025.www1.hp.com/ewfrf/wc/docu ... e=bph07813

BiosMan · Sat Oct 21, 2006 2:35 pm

Intel(R) 82801DB/DBM USB 2.0 Enhanced Host Controller - 24CD
Intel(R) 82801DB/DBM USB Universal Host Controller - 24C2
Intel(R) 82801DB/DBM USB Universal Host Controller - 24C4
Intel(R) 82801DB/DBM USB Universal Host Controller - 24C7
USB Mass Storage Device
USB Printing Support
USB Root Hub
USB Root Hub
USB Root Hub
USB Root Hub

One of the Root Hubs should say "USB 2.0 Root Hub" to go along with the "USB 2.0 Enhanced Host Controller" mentioned above.

RobertR. · Sat Oct 21, 2006 7:29 pm

In the device manager, i dont see USB 2.0 Root Hub.

BiosMan · Sun Oct 22, 2006 1:14 am

That's what I'm saying (you should).

Try re-installing the USB...see what happens.

PS - the "View Devices by Connection" will show you which USB Controller a device attaches to when you plug it in.

Sun Oct 22, 2006 6:45 pm

KachiWachi wrote:One of the Root Hubs should say "USB 2.0 Root Hub" to go along with the "USB 2.0 Enhanced Host Controller" mentioned above.

Not on my Fujitsu-Siemens laptop....

Sun Oct 22, 2006 9:42 pm

That's weird. What chipset does that one have?

Tue Oct 24, 2006 10:24 am

edwin wrote:That's weird. What chipset does that one have?

Code: Select all

Intel (r) 82801DB/DBM USB2.0 Enhanced Host Controller - 24CD
Intel (r) 82801DB/DBM Universal Host Controller - 24C2
Intel (r) 82801DB/DBM Universal Host Controller - 24C4
Intel (r) 82801DB/DBM Universal Host Controller - 24C7
USB Composite Device
USB Mass Storage Device
USB Root Hub
USB Root Hub
USB Root Hub
USB Root Hub

If I view devices "by connection" in Device Manager as KachiWachi suggests then there is a USB Root Hub hanging from the EHC, but it is not listed as a USB 2.0 root hub. It must be down to how it's described in enumeration...

RobertR. · Sun Jan 14, 2007 6:29 pm

I know that thread ended a few months back, but now when i connect a device in the front USB ports, windows xp says that there a power surge on the USB ports. When i go back into the the device manager, i still dont the USB root hub. Whats going on?