Hi farghi and welcome to ExTS :)
I have my doubts that the clicking sound is coming from the motherboard.
I suspect that it is coming from the hard drive itself.
Can you take the drive out and connect it with an adapter or external enclosure to the USB port of a working computer ...... or use SATA leads and connect it direct to the motherboard of a desktop machine.
The "no battery charge" could be due to the fact that the battery is 9 years old :)
17v seems a little low ............normally I would expect 19v ...........but the label on the unit itself should confirm what the voltage should be.