How to replace a motherboard in a hp pav...

you need to deal it professionally....

will will have to start by disconnecting all of the hardware { hard disk/ dvd or cd-rom . remove all led plugs make sure if you cant remember where everything goes you mark each thing you remove with numbered tape. number the part you removed and number where it cam from .
example hard drive will be mark as 1 and the plug that came from it will be also marked as 1.
now you will have to unscrew the stand outs. these are little lifts that support the board and keeps it from touching the frame. { note make sure to ware a esd> eletro static discharge bracelet or make sure there is no chance of static discharge. this will fry componets