I heard and read a lot about the danger of touching the golden contacts/fingers of the RAM memory and the circuit board of the Hard Drive, MotherBoard, GPU or any other important parts of the system. The fact is : I'm building my first computer and just bought the pieces. There's no warning or protector on the board of some of the pieces I bought and I accidently touch some delicate parts.
1. While trying to remove the memory stick (RAM) from it's little box, I barely touched the gold contacts at the bottom of it with the very tip of my finger for about a second.
2. While getting my HDD out of the box, I handled it like it was jus a piece of metal but didn't realize the green circuit under it was important. It's a bare drive and no instructions or anything came with it. I hold it and put some fingers on the board for only a few seconds.
Is it bad for the pieces? (If my fingers weren't oily or dirty or anything) Can I clean it or something?
no your fine. you do more harm trying to wipe a small finger print off then the oil will do for the life of the computer part. esd pr static is the number one killer of parts so you dont want to use a paper or cotton to wipe them off. there a little bit of acid in human sweat/oil. on older computer parts you could sometime see where a finger print was after a few years. your not going to cause a part to die today or in a few days from handling it or in a few weeks.