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PC won't power on


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#1 boscru

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Posted 12 April 2009 - 12:16 PM

I have an HP Media Center m1170n. It will not power on. When I press the button on the front I don't get anything at all. I thought it may be the power supply and tried a new one, I still have the problem. I disconnected all addon cards, HD cables and power cables from the motherboard. Plugged in the 24 pin cable to the board and turned the PC on and the fan on the PSU started. I then plugged in the 12v connector and turned on the PC and the fan on the PSU did not start. Does this mean my board is dead, CPU is dead or both?

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#2 fairjoeblue

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Posted 12 April 2009 - 12:19 PM

HP/Compaq uses rebranded "Bestec" power supplies.
[Same ones found in emachine]

HP/Compaq/Bestec power supplies are best known for going bad & frying the motherboard in the process.
OCZ StealthXstream 700W,Gigabyte GA-EP45-UD3R , E8500, Arctic Freezer Pro 7, 3GB G.Skill PC8500,Gigabyte Radeon HD 4850 OC [1GB ], Seagate 250GB SATA II X2 in RAID 0, Samsung SATA DVD burner.

#3 boscru

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Posted 12 April 2009 - 12:38 PM

The PSU is an Antec 450w. It was replaced a year ago. Original was a 300w that died.

#4 fairjoeblue

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Posted 12 April 2009 - 12:45 PM

"The PSU is an Antec 450w"

I suppose that kind of kills the "Bestec" theory.

From what you said in your first post the only way you are going to find out what is actually bad is to try the CPU on a different motherboard or try a different CPU on your motherboard [which I wouldn't do, if the mobo is defective it might kill a second CPU]
OCZ StealthXstream 700W,Gigabyte GA-EP45-UD3R , E8500, Arctic Freezer Pro 7, 3GB G.Skill PC8500,Gigabyte Radeon HD 4850 OC [1GB ], Seagate 250GB SATA II X2 in RAID 0, Samsung SATA DVD burner.




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