Question about HP Pavilion a800n (PP163AA) PC Desktop

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Hp Pavilion a530e will not power up shortly after powering down

The computer works fine except it just will not turn on within 10-15 minutes after turning it off. I did notice the CPU fan starts off at the slow speed right away if it's going to work and starts off much faster when it is having the problem. If you turn it off within 10 seconds or so of first turning it on you can get it to power back up again but if you wait much longer it makes you wait 10+ minutes next time.

I already tried removing all the cards, tried different memory and a different power supply with no change in the behavior. The capacitors all look good visually but I suppose still could be bad.

Think this is a mother board problem or CPU?

FYI... I won't give bad feedback to people who try to answer my question!


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  • Ben Jordan Nov 07, 2007

    The data on the HD is fine... the problem is not with the HD and happens even with the HD disconnected. The unit will not boot up at all when the problem happens, not even to bios.



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Have you tried 2 reformat your system.. i suggest u try 2 fornat it and see f dat problem still exist.. hope it can help

Posted on Nov 07, 2007


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Install power supply

No Power on an HP Pavilion PC Desktop b> Desktop computers are simultaneously more complex and easier than laptops when it comes to troubleshooting. There are more physical components on a desktop, so locating a specific troublesome part can be tricky, but working inside of a desktop computer is straightforward compared to opening and fiddling with a laptop. Power problems are always hardware problems. There are a few simple, preliminary steps to troubleshooting, but power problems often require opening your computer and having a look inside.

The Basics
Unplug everything from your PC except for the power cord. Try turning on the system and look for lights on the front, then on the back. When the power supply is on (receiving power), the small light beneath the plug turns green. If this light doesn't come on, the problem is either connected to the cord or the power supply. Try swapping power cords with the monitor cord to isolate the cord as the source of the problem. Look closely at the voltage selector and make sure it's set appropriately for your country -- 110 in North America and 220 for most other regions. b> The Socket b> Unplug the power cord and switch the voltage selector to the opposite setting. Wait five seconds, then flip it back. This ensures that the switch is engaged. Plug in the power cord again and try turning on the PC. Check the outlet to make sure it's working, and plug your computer direction into the wall socket (remove it from any surge protectors or power bars). Check the power button. If it sticks when you push it, it may not be making contact to engage the system power and will need to be replaced. If the button is going in and out freely, you've done about everything you can do from the outside of the computer. It's time to go inside. b> Open it Up b> Unplug the power cord and hold down the power button for five seconds. This clears all electrical charges from the circuitry and makes it safe to open the computer. Remove the side panel from your system. This process varies a bit from model to model -- some have one or two captive screws on the back of the system, some have an easy release button. Check your manual. b> Power Button b> Locate the power button from the inside and trace the cables to where they plug into the motherboard. Lift up on the connector and then push it firmly back down. Plug the PC back in to its power source and try to power it on. Unplug the computer immediately if the system doesn't power up, and continue troubleshooting. b> Hardware Components b> Disconnect each of the devices in your computer one at a time to locate a faulty piece of hardware. Power cables run from the power supply connect to your optical drive, hard drive, floppy drive (if one exists) and into several places on the system board. This step takes some trial and error detective work and a few minutes: unplug one device, reconnect the power, and try turning on the system. Then disconnect the AC power, plug the device back in and try the next one. If the system powers up at any stage, the device you are unhooking is shorting out the power and needs to be replaced. To Replace HP Pavilion Desktop Power Supply Hp Pavilion 750n desktop computer basics on this computer b> HP Pavilion Slimline PSU Upgrade Guide This guide compares the Sparkle SPI270LE - 270 watt PSU against the Shuttle PC50 -300 watt as possible power supply upgrade for a HP Slimline. The s3600t Slimline I used for this video has a Intel Hope this helps.

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1 Answer

My hp pavillion a530 wont turn on i havent turned it on in a while but it worked fine about a year ago now it wont even turn on


There is a good chance that the power supply is faulty. This occurs because there are high voltages present in a power supply when in use. Electronic components have a tendency to be very reliable when in constant use, but when they are not used for some time and then suddenly receive current when turned on, they often blow due to the sudden flow of electrons.
Try obtaining a working power supply from another computer and test if your PC switches on. If this does not solve the problem then I would suspect a RAM problem.
Remove the RAM from the motherboard and clean the contact points using an electrical pc board cleaner. This is also a common cause of a PC not turning on.

Please don't hesitate to contact me again should these options not solve your problem.

Best wishes,

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Yes it needs a power supply. You can get a cheep one on eaby or get one off of the HP site

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