How To Safely Clean The Dust From Your PC HOW TO SAFELY CLEAN THE DUST FROM YOUR PC cleaning tools: soft 1" long bristle paint brush/ compressed air or "air in a can" / floor fan / dust mask I recommend that you bring your computer outside or into the garage so that all that dust your about to stir up isn't left in your room flying around because that dust is just waiting for a chance to get right back into your clean computer. It’s a good idea to put a floor fan behind you set on low speed to blow the airborne dust away from you and the computer and it is advised that you wear a dust mask while doing this or you will be sneezing all night lol. You can use a compressed air tank to blow out the dust as long as you don’t get too close with the nozzle so stay at least 8-12" away from everything at all times and you keep it under 30lbs of tank pressure so it wont bend capacitors or hurt anything. its much safer to use a shop vac on the blow setting or a leaf blower on the low/soft setting if you feel the need to blow it out Before starting you should count the number of jumpers on mobo if yours has then and take note of the tiny connector pin locations in case one should come off during the cleaning process. Use a good soft 1" long bristle paint brush and wipe clean the motherboard itself along with any wires, empty ram or pci slots, pci cards or video cards. Take your time to brush out all your heat sink fins very well removing the fan to clean it and the heat sink better. Also brush off all wires, fans and fan blades, its like dry washing it and you should clean everything to get rid of all dust. If the brush gets dusty blow it off with the air and wipe it on a dry towel to clean it off. Now remove the front faceplate on the case to clean it and the front side of the frame and don't forget to clean the inside of the case itself (floor, top, sides, and case fans) with the paintbrush and some air. NOTE: if you cant or don’t want to bring your computer outside or to the garage then it can be cleaned with a shop vac and attachments but be carefull because a vacuum can, if you are not careful, pull the small wires loose from the motherboard pinouts or suck the jumpers off of the board so make a note of where and how everything is plugged into. Another big negative to vacuum cleaning is of course it makes a lot of noise. anytime you use a vacuum cleaner the air causes some friction as it moves against rough or uneven surfaces so I also duct tape a small piece of old rubber hose (I use old garden hose) onto the end of the vacuum hose to further insulate it from possible static charge buildup. Use a hand held brush to do the actual cleaning then the vacuum to remove the loose dust and to clean the tough spots. Sometimes the brush gets trashed but it’s the gentlest way to really get aluminum block heat sink fins clean and for cleaning fan blades. For cleaning those big radiator finned heat pipe cpu coolers, when they get really bad with dust you just take them off and let soak for an hour under warm soapy water and all that dusty film comes loose and it will wipe clean with just a soft paint brush passed back and forth like brushing teeth. To remove any remaining residue to finish cleaning, just put it in the sink with the spray nozzle and hot water. It will come out like new again. Now is a good time to add more shine to your computer by just using automotive car wax on the painted parts of your case. It shines and it will help prevent scratching. Remember to watch the dust when you’re wiping it off so that it doesn’t get into your clean computer. NOTE: you can also open the PSU to clean it if you have to but it should always be avoided if you don't have to and if you are going to open it remember that it can hold a charge for a long time and it can KILL YOU so its not something to do just for the heck of it. when opening it turn off the power and unplug the cord and wait a full 24 hours to be sure the power has been discharged and even then some capacitors may be holding a charge so when working on it you still are supposed to be wearing rubber gloves just to be safe so you don't get shocked.