Question about HP Pavilion 754n PC Desktop

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I have an hp 754n that will not turn on.. the green led on the back is lit up but when i hit the on off button nothing happens

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  • Anonymous Mar 05, 2009

    I also have a 754n that will not turn on. Exact same problem as "nelson 5559" had with his 754n. I did notice a ribbon cable was laying against sharp heat sink fins which had cut through the ribbon cable insulation. Still do not have a solution. Where can I get a 754n motherboard?...Morris

  • Jay
    Jay May 11, 2010

    this could be caused by a number of reasons. number one is hardware failure but the simplest is sometimes CMOS battery needs to be replaced.

    Turn off your Desktop and reset your CMOS. Turn it on again see if it works.


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I would say there is a problem with the motherboard, you could check to make sure the power supply is connected, if you don't know what a motherboard or power supply is, i would advise that you take the computer to a technician, you could injure yourself, or ruin the computer completely if you attack it with a screwdriver

Posted on Jan 20, 2009

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1 Answer

MY PAVILLION WILL NOT COME ON AFTER PRESSING THE BUTTON.


1) HP Pavilion 745n Desktop PC is dirty inside. Power unplugged from computer, Anti-Static Precautions -> FOLLOWED, use a can, or two of compressed air for computers, and clean. (Especially the processor heatsink fins, and processor fan)

2) Also replace the Power Supply.

Before doing so suggest performing the simple test to see if the problem is the Power On button, or Power Supply. Test voltages coming out of Power Supply with a multimeter, or use a KNOWN to be good, Compatible power supply for a test unit, borrowed from a working computer.

Need guidance with the above post back in a Comment.

http://h10025.www1.hp.com/ewfrf/wc/product?product=296688&lc=en&cc=us&dlc=en&lang=en&cc=us

Regards,
joecoolvette

Nov 23, 2012 | HP Pavilion 754n PC Desktop

2 Answers

Sharp LC40LE600E wont turn on


Had exact same symptoms as Keran. Turned out to be my daughter had turned the TV off with the other power switch which is a button on the right hand side of the set - we always use the rocker switch on the left hand side and had forgotten about the button. Turned the rocker switch on, then the button and it was back to normal.

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1 Answer

Powered down my cpu (hp pavilion 1530 ) and about 5 hours later it would not power up. Hit he power button and nothing, no fans, no blue light, no cdrom bliking, but the green led is lit on the P/S.


Hi,

Open your tower:
Remove first the video card if you are using a Add in video card. Of course connect your monitor to the built-in video card
Try now

Next remove ram and reseat them back ( if you have more than one stick, try reseating only one)

Try now again

Disconnect CD-rom, Hard Drive

Try now

Last but not least try a different Power supply

Good Luck

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1 Answer

Satellite a135-s2356 aill not boot up


a friend had same issue , i dissembled laptop and found a burnt diode chip beneath where power button sits on top cover panel there are two clips under power button , one of the clips shorted the diode , only orange power button would lit up on front edge of lower case

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1 Answer

My 754n will not turn on


Make sure that the power wolts is as per required.
and try connecting to different wall outlet and also check the CPU fan. if it is firmly fixed.

Jan 19, 2009 | HP Pavilion 754n PC Desktop

1 Answer

No booting anymore


Sound like a motherboard problem.

If you unplug and remove the battery, the light should turn off
put the ac back in, power up, do fans spin? any beeps? just the light?

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1 Answer

No power


check ur smps and power connector Mother board ok
next power switch for on/off ok check front panel byy

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2 Answers

Power LED on but no boot up


Its the Mother Board..I had the same problem and had to have a new MB put in

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