What causes a motherboard to go bad in the computer?

Answer 1

hi: most times it is either a bad power supply fan or either a CPU fan ,and sometimes a power surge,also they get dirty inside . heat and dust are a killer to any computer. i do hope this helps someone. Ron

it also happen due to ESD (Electro static discharge).

Answer 2

There are 3 main enemies of a motherboard. One or more of these can combine and cause a motherboard to stop functioning:

* Dust - Dust will frequently settle on the motherboard inside the case. These can make it more difficult for removable components to make good electrical contacts. Depending on humidity and the composition of the dust, it can even short out the motherboard. * Improper voltage - Voltage spikes and dips will stress the components found on a motherboard. This will cause them to either fail outright or decrease their lifespan through electromigration (in the chips) or chemical imbalance and leakage (in the capacitors). * Heat - Many of the components on a motherboard, such as the CPU, graphics controller, and Northbridge. Through the stresses of heating up and then cooling down after you turn it off, the motherboard will expand and contract. Over time, the motherboard can actually crack and break. Too much heat will also cause failure and leakage of the capacitors.

Answer 3

Heat and exposure to dust or water can cause the motherboard in a computer to go bad. The most common damage is caused by heat, especially when the fan on the computer is damaged.