Usb port not working on bios acer 4730z jal90 la-4201p rev 1.0

[kalilinux25]

hi, i have this problem the laptop has a broken keyboard so icant used the internal keyboard so iwant to use a external keyboard but when I tried to plug the keyboard it wont function i tried different keyboard and mouse also but no chance , I want to know where to troubleshoot first?
I also tried flashing its bios but no chance ,

[karlox]

Re: Usb port not working on bios acer 4730z jal90 la-4201p rev 1.0

Why do you want to reprogram the bios? First make sure you have voltage in the usb ports, sure you have some damaged coil. Just make sure that your input peripherals are good in another computer.

[kalilinux25]

Re: Usb port not working on bios acer 4730z jal90 la-4201p rev 1.0

[QUOTE=karlox;903093]Why do you want to reprogram the bios? First make sure you have voltage in the usb ports, sure you have some damaged coil. Just make sure that your input peripherals are good in anot


whe i tried to measure the voltages its 5v

[mcplslg123]

Re: Usb port not working on bios acer 4730z jal90 la-4201p rev 1.0

5V is usb power. What about the other 2 pins-D+ & D- ??

[kalilinux25]

Re: Usb port not working on bios acer 4730z jal90 la-4201p rev 1.0

5V is usb power. What about the other 2 pins-D+ & D- ??

I already figure it out looking to the back of the usb port I see a corrosion that may be the problem then I replace the all port now its already up and running .

Thamnks fort the gereat help