push power button nothing

May 19, 2013 at 16:20:59
Specs: Windows Vista
I have been using my hp pavvilion slimline s5257c for three years and I was using just the other day. I shut it down to go to bed and in the morning I tried to turn it on and nothing. The monitor just says going to sleep. I pulled the monitor cord and it said that i needed to check video cable on the screen. put it back in and it is still black. I started looking at the back of the computer and noticed everytime I pushed power the led light on the back would go off. I opened it up and watched the computer as I pushed the power button. I noticed that the two fans in the computer spun briefly then stopped but the power supply fan did not move. I stopped and researched the problem and reseated all connectors and tried it again. Same thing! The led on the back comes on when I hold the power button down and basically shut down the computer. There are no wizzes or beeps at all. Anybody heard of this before?

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May 19, 2013 at 18:41:25
Sounds like you have a faulty power supply. Your system uses a TFX PSU.



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May 20, 2013 at 16:24:47
In addition to the above post. It's possibly your graphics chipset, motherboard, RAM or even something obscure like a faulty wifi card. So put your detective hat on.

Start with the basics and unplug the power cable from the tower and then press and hold the power button for 30 secs,. Next step is to clear CMOS completely by either moving the dipper from one side of the 3 pin array to the other side and then back again or just take the battery out for 5 minutes. if this doesn't work then try swapping out the RAM or reseating the processor and changing the thermal grease. If it still doesn't boot then try a graphics chip reflow, but carefully, don't go setting fire to the motherboard and make sure you get some liquid flux under the chip. Then if your still having problems, well it's probably going to mean spending some money. Either new PSU, MOBO or processor, you'll need an electrical meter to test your psu, cable and MOBO first and if none of those are at fault look at replacing the processor or buying a new PC.

Good luck

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May 21, 2013 at 19:23:07
I'll give it a try! Thanks

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