|Have you, or is it possible someone else who had access to this computer...|
- dropped it, or dropped anything on it, or otherwise exposed it to a physical jolt ?
- spilled liquid on it, or sprayed it with liquid, or exposed it to liquid such as rain ?
Defective laptop keyboards can be easily replaced with an inexpensive replacement keyboard, and you can use a USB keyboard in a pinch if the built in one is defective to do most things, but if none of your USB ports work, your laptop or netbook is probably damaged.
I have an Acer laptop that was given to me to troubleshoot.
Someone dropped it.
At first, for months, only the built in LCD display was not working - an external monitor worked with it fine.
Then the keyboard, touchpad, and the USB ports would not work, and still do not work.
I took it apart and tried everything I could think of - there is obvious physical damage of the mboard near one corner of it, but nothing else obvious - but that was of no use. At the very least, I suspect the mboard must be replaced.
It boots fine, still displays on an external monitor, Vista loads, but I can't get past the Login screen with no way of using a keyboard or a mouse.