| Trace the connections from the computers power supply to the motherboard. There should be two connections ( one if it’s a Pentium 3 or older ) Unplug all devices such as DVD / CD , Hard Drive , Floppy Drive , all these devices will have a Data cable running to the motherboard and a Power cable running to the power supply. Next remove the cables running from the case to the motherboard these include , the reset button , power led , power switch , hard drive led . It’s worth making a note of what goes where here. If you or anyone else is going to use the motherboard in the future, plugging these cables in without any instructions can be a real pain. Now use the Phillips screwdriver to remove any cards. All of the cards should just pull out. But sometimes the Graphics or AGP port will have a small catch on the front of the connector, you just have to press this and then you’ll be able to pull out the card. If you need to remove the RAM it’s just a case of simply pulling the motherboards RAM holders outwards, you’ll then be able to remove the memory.  Removing the processor , can be a little bit tricky , first you’ll have to remove the heatsink/fan , to do this unclip the fans power connector from the motherboard , Now press down the heatsink lock and use the flat bladed screwdriver to un-secure it from the motherboard Now you just need to raise the Motherboards Processor locking arm , and you’ll be able to remove the processor. Now everything has been removed from the motherboard it’s just a question of removing all of the screws holding it in. Don’t forget to keep the screws in the small pot or saucer, to lose any means the new motherboard will not be properly secured or earthed.
To skip directly to how to install a motherboard checkout our Install guide here
computer-adviser.com if you need to know how to install a motherboard or how to remove a motherboard | 
