If the motherboard in your laptop fails, and it is a machine that is worth keeping, you can obtain replacement parts and maybe even upgrade the unit in the process (depending on the model of the laptop).

Follow these steps to replacing laptop motherboard: 

1. Disconnect the power cable and remove the battery. 
2. Turn the laptop over and place it upside-down on a flat surface.
3. Remove any screws that secure the optical drive and hard drive (see your laptop's Owners Manual for locations) and set them aside.
4. Proceed to take all of the screws out of the base of the laptop. Loosen the clips that hold the memory chips in place and lift out each memory module. Often, the memory chips are located in the same area as the mini-PCI wireless card. The memory chips will be about half the size of the mini-PCI card Disconnect the antenna lead from the wireless card, if one is present. Release the clips securing the card and remove it.
5. Open the processor access door, if there is one on the machine. If the processor is removable, and one did not come with the new motherboard, remove it and set it aside in a safe place.
6. Now check that all the base screws are removed and begin to open the case. On certain models, the keyboard will need to be removed in order to open the case, if so, see our guide on HOW TO REMOVE A KEYBOARD.
7. Draw a picture of the component locations before taking anything else apart. This will help you to assemble the machine correctly after the job is done.
8. Disconnect any wires that are connected to the motherboard. Unplug any cards, such as the video card, that are not built directly into the motherboard. Locate the mounting screws for the motherboard and unscrew them.
9. Remove the old motherboard, mount the new unit and reassemble the parts in reverse order.
10. Attach the power cable and boot up!

I hope you have found this guide helpful. If so, please vote so that others can benefit as well. Thank you for reading.

Disclaimer: This guide is made purely to give advice to anyone looking to repair a fault with their laptop.We accept no responsibility for any loss or damage to any components by following this guide or not.