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Fans and lights are working so power supply not completely dead...I don't have another power supply that would work...HP Slimline power supplies are very odd size... 
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Fans and lights are working so power supply not completely dead...I don't have another power supply that would work...HP Slimline power supplies are very odd size...

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Thinking out loud PC crashed: <br />
<br />
No Video\BIOS &nbsp;(not coming up)<br />
Installed new video card (No Video\BIOS)<br />
Hard Drive not spinning<br />
Tried secondary power to hard drive<br />
Tried secondary SATA channel to hard drive<br />
Tried secondary SATA cable to hard drive<br />
Reseeded power to mother board<br />
Secondary hard drive did spin in PC <br />
CD-ROM does spin<br />
<br />
Placed Hard Drive in Secondary PC and Hard Drive does spin up<br />
<br />
How can I determine if power supply or mother board? 
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Thinking out loud PC crashed: 

No Video\BIOS  (not coming up)
Installed new video card (No Video\BIOS)
Hard Drive not spinning
Tried secondary power to hard drive
Tried secondary SATA channel to hard drive
Tried secondary SATA cable to hard drive
Reseeded power to mother board
Secondary hard drive did spin in PC 
CD-ROM does spin

Placed Hard Drive in Secondary PC and Hard Drive does spin up

How can I determine if power supply or mother board? 

PC will not boot up

A desktop computer is a personal computer designed for use at a single location due to its size and power requirements, usually by one person. The most common configuration has a case that houses the power supply, motherboard, disk storage (usually one or more hard disk drives and optical disc drives); a keyboard and mouse for input; and computer monitor and printer for output. The case may be oriented horizontally and placed atop a desk or vertically and placed underneath or beside a desk.

Desktops

A personal computer is a general-purpose computer whose size, capabilities and price make it useful for individuals, and is intended to be operated directly by an end-user with no intervening computer time-sharing models that allowed systems to be used by many people, usually at the same time. Personal computers may be connected to a local area network (LAN), either by a cable or a wireless connection, and through that to the Internet. A personal computer may be a laptop computer or a desktop computer running an operating system such as Windows, Linux or Macintosh OS.