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A DC voltmeter can be connected to the four terminals in any spare drive power connector. &nbsp;You should see around 5 volts DC between red (+) and black and around 12 volts between yellow (+) and either of the two black wires.<br />
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Most of these power supplies need to have a load to properly work, I.E. they won't work without something other than a meter plugged into them, but usually the power supply fan is enough load.<br />
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Also try this test with the whole system running if you thing you have a power supply too small in wattage.<br />
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The orange wire in the motherboard connector (Pin#1) is the power good signal to the computer it should read 5+VDC to the black common ground wires.
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A DC voltmeter can be connected to the four terminals in any spare drive power connector.  You should see around 5 volts DC between red (+) and black and around 12 volts between yellow (+) and either of the two black wires.

Most of these power supplies need to have a load to properly work, I.E. they won't work without something other than a meter plugged into them, but usually the power supply fan is enough load.

Also try this test with the whole system running if you thing you have a power supply too small in wattage.

The orange wire in the motherboard connector (Pin#1) is the power good signal to the computer it should read 5+VDC to the black common ground wires.

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I am told that in order to upgrade to an AMD K6-3 450mhz Cpu. That I have to have a power supply that can deliver 250v. This is what I'm after.
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I am told that in order to upgrade to an AMD K6-3 450mhz Cpu. That I have to have a power supply that can deliver 250v. This is what I'm after.

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How can I tell how many volts my computer power supply has?
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How can I tell how many volts my computer power supply has?

Power Supply?

Hardware includes cell phones and other digital living devices, tablets, computers, servers, peripherals and components, printers and scanners, gaming consoles, networking hardware such as routers, hubs, switches and modems, storage devices and security equipment such as firewalls and other appliances.

Hardware

Components are those devices that are internal to a computer -- the PC boards, the central processor (CPU), the memory (RAM), disk and video controllers and so on.