Power supply repair

When a computer shuts down unexpectedly on it's own, it is an obvious sign that you need to have it serviced or undergo a power supply repair or to buy a new one. The most comon symptoms of power failure is the fan. If you see an error message about " Fan Failure" when you boot up your windows it's time to get a power supply repair or buy a new one. Often times there is a shortage of voltage to power up all the components in the system and if not given preferrential attention right away, it could lead to the failure of the hard drive or the memory. The whole system could fail prompting you to buy a new pc. So, what do you choose, to buy a new pc or to buy a power supply?