� Excessive heat or cold
� Excessive dust buildup on the PC parts,
� Magnetism interference;
� Viruses, Spywares, Malwares either downloaded from the Internet, shared via email or from storage media shared between different computers;
� Static electricity shocks or power surges;
� Spilling liquids onto the PC
� bumping or dropping the PC
� Wrong or forceful insertion/ removal of hardware
� Wrong hardware driver installed
� Outdated or faulty hardware
