Cleaning my PC

                                                     First, we brought our computers outside.

 Next, we opened our PCs. In this case, with our Dell towers, we unlock the tower by releasing the buttons on the top and bottom of the tower. You can then pull the tower apart to about a 60 degree angle.

Now we are prepared to clean the inside of the tower using compressed air.

 Finally, the tower can be closed and returned to the lab.