? Excessive heat or cold
Accumulation of excessive dust ? on PC parts
? magnetic interference.
? Virus software spyware, malware is downloaded over the Internet, shared by email or storage shared between different computers.
? electricity static shocks or power surges.
? Spilling liquids on the PC.
? bumping or abandonment of the PC
Incorrect or energetic ? insertion / deletion of material
Bad hardware ? driver installed
? Outdated or faulty equipment
