Installing ceramic or porcelain tile is both an art and a science. Tile installers must know the composition of the tiles as well as how to lay them in place attractively. Besides the normal costs of labor and materials, a tile project's costs vary by the type of sub-flooring to be used as a foundation for the tile.
Three things can cause an EMI problem: A signal source creates some kind of noise, there is a transmission path for the noise, and/or there is a receiver sensitive enough to be distorted by the noise, as shown in Figure 1.
Computer Noises From Inside The Case. If your computer makes weird noises inside the case, it can only be caused by a few things. The components that can generate noise in the PC are the fans (there could be several), CD or DVD drive, Floppy drive, hard drive and power supply.