Cracking the case shouldn't be feared, I've done it many times, and I've almost never damaged anything. Recommendations: Unplug it (I've seen this in previous posts), it used to be better to leave it plugged in pre-ATX, given ATX's always powered on to some extent, it's best to unplug it completely. How much static charge you have doesn't really matter, as long as you have the same charge as the equipment you are working on. Be very aware of this, you want to make sure to keep your charge equal to the equipment you are working on. This is the function of anti-static bracelets. Assuming you don't have one, just keep one hand on the chassis of the computer while you work, or touch the chassis often. And don't move around in such a way as to build up charge, and if you do, touch the chassis again. I/O card have chassis too, it's the hanger bracket. Anti-static bags also also a way to equalize charge with the component inside the bag, just by holding on to the bag. If you have to lay a part down on a table, lay it on a anti-static bag. Be careful, don't use too much force. If something seems to take a lot of force, your probably not doing it right. Dust can cause you many problems, keep the dust out of the equipment. Make sure connectors are free of dust before connecting them. Canned air is good for this purpose. Work slow and careful, be sure of what you are doing. If something takes longer to use a little extra care, then it takes longer. Fear of cracking a computer case can actually itself result in damage to expensive parts. I've inherited plenty of equipment because of problems caused by dust. On 7/8/2014 11:17 PM, Michael Hennebry wrote: > On Tue, 8 Jul 2014, Ljubomir Ljubojevic wrote: > >> I service PC's for 14 years (professionally), and never had anything >> zapped. And I do not use anti-static wrists. So it is strange to hear >> that you had part zapped on first opening. That is all. > Given my track record, you can see why I'd like to be > really sure it's necessary before cracking the case. >