How to check what PSU your PC has To check the power supply inside your PC, it's required to take the chassis apart to see ...

it will give you a rough estimate of how much power your PC should consume, and also what power supply you'll need to ...

A computer power supply converts AC into multiple DC voltages. For example, 12 volts is commonly used for drives, while 3.3v and 5v are used by the chips and other motherboard components.

Power supply issues are the main cause of this problem. If your computer or printer is not directly connected to the main power source, say they are connected through a UPS, the UPS might be faulty.

If ATX Power Supply get your electrons flowing, check out this entire computer built into a gutted ATX PSU.