Hi,
I got a HP DV5000 with usb issue : when I plug in any usb device, windows freezes and I need to unplug the device and restart windows.

Tested Usb port, seems ok :
pin 1 : GND
pin 2 : USB0+ =0,02V when device is unplugged and 3.9V when an Usb optical mouse is plugged
pin 3 : USB0- =always 0,02V with and without Usb mouse
pin 4 : USB0PWR= 5.67V

Noticed that optical mouse doesn't light when plugged in.

I suspect Southbridge fault ?

Has anyone experienced the same situation ? any clue for steps to solve the problem !

Platform : HAL 20 COMPAL LA2771

Thank you for your comment

Change southbridge..

I've no BGA machine.
I often reflow nvidia chips with high rate of success, but never tried to reflow southbridge. Is it possible to go for a Southbridge reflow to solve the issue ?

Thanks

no, reflow of the southern bridge will not help . only a replacement.

Thanks for your post.
Lack of BGA machine to change Southbridge, I will return the lap to customer.