Armani13 5370 vostro 5370 strange issues

[questore]

Hi everyone, thanks for your time to look at a my problem.
This type has a secondary IO board that has WIFI card slot, 2 USB port, microSD reader and the power button.
The problem started when laptop serial cable slided out the slot and therefore it shorted 5v to ground.
Secondary board connector is melted, cable is toast so I have replaced them and since 5V generator chip got partialy shorted i replaced it too "PU8900"
Now laptop starts and system seeing USB pendrive, windows installs fine and works fine, no unkown devices or anything after drivers installation BUT ...

1. Whatever else I connect to USB the computer does not see it.(mouse, keyboard, phone) only USB pendrives can be seen and wokr fine reading and writeing also
(If a phone is connected then is starts charging but no options for file transfer or anything)
In BIOS also no mouse of keyboard so its not windows problem.
2. Another starange thing is that WIFI card does not displayed anywhere, like its not connected at al.

Anyone has any faint idea why is this?

[mon2]

The unrecognized USB devices may be slower than the pendrives that are working. That is, pendrive may be USB 3.x which will use different interface lines than USB 2.x / USB 1.x designs like the HID model mouse / keyboard.

Respectively, confirm if the USB D+ / D- pins are ok on the port under test. Remove all power. Meter in DIODE mode. Red meter lead, yes RED to ground. Black meter probe to D+ pin on the USB connector. What is the voltage measurement in diode mode? No power to the board during this test.

Repeat for D- pin.

[questore]

The unrecognized USB devices may be slower than the pendrives that are working. That is, pendrive may be USB 3.x which will use different interface lines than USB 2.x / USB 1.x designs like the HID model mouse / keyboard.

Respectively, confirm if the USB D+ / D- pins are ok on the port under test. Remove all power. Meter in DIODE mode. Red meter lead, yes RED to ground. Black meter probe to D+ pin on the USB connector. What is the voltage measurement in diode mode? No power to the board during this test.

Repeat for D- pin.

I think you are on to something. its always nice to learn something
USB 2.0 pendrives are not working only USB 3.0

First USB-s have 0.712 on D+ and 0.695 on D-
Second USB have OL on both.

What could be the issue?

[Sephir0th]

A dead USB2.0-Controller inside of the Chipset, except you find something else being wrong.

I did not understand in full, what "serial cable" has slipped in particular. Maybe it will reveal something when you tell us more about this incident in detail.

[mcplslg123]

What's the point of measuring Resistance to GND on D+/D-(data lines) when pen drive is working?

Since USB3.0 is working and USB2.0 is not working, it has something to do with usb2.0 circuit.

[questore]

A dead USB2.0-Controller inside of the Chipset, except you find something else being wrong.

I did not understand in full, what "serial cable" has slipped in particular. Maybe it will reveal something when you tell us more about this incident in detail.

The serial cable is held ín place by a secure clip that is loosen somehow(probably dropped the laptop) and the cable slipped out of the connector. Therefore the 3 pins that provide 5v on the side is shorted to ground.

I would live with only usb 3.0 working. But what about the wifi card?