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hi oh it's David here from DP computing today we've got a Dell Latitude a 504 own laptop which I'm just going to tear down or open up just to show you how to get into it to replace the hard drive memory the Wi-Fi module clean the fan and also the onboard battery just before we continue just word of warning take static precautions and proceed at your own risk I also know that this may void any warranty now the first thing you have to do is remove the battery which is here so there's just two little slots here so the one over here you'll click and it holds there this one you'll have to hold it in and once holding it in just pull out the battery then there's actual six screws there's one two three four five six they're all labeled II these two screws also remove the keyboard if needed also these two screws are a longer type of screw which is there and now the four screws are the normal sho