Question about HP Compaq Presario 7AP135 PC Desktop

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I am unable to turn the computer on. There is nothing wrong with the electrical outlet or the power strip that I am using. The power button on the computer does not have any tactile response. Could the power button be defective? Could there be something wrong with the computer's internal power supply?

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  • Anonymous Mar 09, 2009

    I can’t open a new mail, also still receiving a massage error 999, from any PC’s please advise and help, thank you
    Rudy Mounayyer

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  • HP Master
  • 524 Answers

U can check both the power switch on your CPU and the power supply using multimeter.

http://blog.diyersitzone.net/2008/01/05/power-supply/

Posted on Mar 09, 2009

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4 Answers

If my pc wont turn on with the cable plugged in, what's wrong?


Check whether power pack has output voltage. If not, power pack is faulty. Replace it. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy. Pull up older posts. Surf the site with patience. Do a search by type in the brand name of your device at its search box.
http://electronicshelponline.blogspot.com/

Jun 11, 2014 | Acer Aspire All-in-One Desktop PC - Silver...

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Control button locked. when I turn ooff PC the sleep light will not turn off.


Typically, the computer is defaulted to stay turned off after an electrical outage. To start the computer from scratch again, hold the power button in for several seconds. If it powers off, wait a minute, then hold the button in again to start it. When the screen comes up that says it didn't shut down properly, choose Safe Mode without networking. It will look like it is hanging on several files, normal, let it go. The screen & icons will be large because it is in default VGA mode. Once it stops loading, go to the Start Button & choose Restart. Things will return to your chosen default settings and most things will work again providing you have an EMI/RFI Surge Protector power strip that everything was plugged into. I have had several fail after a power surge, they are supposed to. Some have insurance should you have electrical damage after a power surge that got beyond the strip. Ultimately, $15-$50 is cheaper than your PC &/or monitors damaged by not having one, they are designed to be the Sacrificial Lamb & be the cheap breaking point.

As an added note, people confuse Sleep Mode with Hibernate Mode. Sleep mode means anything you are working on gets suspended into your available memory while it goes into Power Saving mode. On a power loss, all will be lost, save regularly if you use this mode.

Hibernate uses a space on your hard drive to write the information. Power loss, nothing is lost and on waking up or powering back on, your data will still be where you left off, usually intact. To restore from either mode without electrical loss, hit the ESC key. Exceptions will occur if you use Hibernate mode but only have a power strip for your multiple plugs. A power surge can still damage your computer because it wasn't blocked by the EMI/RFI power strip.

How do you know which one you have ? If you only have an On/Off power switch, you have an unprotected power strip. If you have a button on the side of that switch, known as a Reset Switch, you have a protecting one. Even if the Reset Button doesn't restore the power strip, it gave it's blife to protect your computer equipment. Cheap insurance.

Good luck.
DellTech.

Sep 01, 2012 | Dell Computers & Internet

3 Answers

When I start up my computer, nothing happens. The hard drive doesn?t spin, the fans don?t work, nor do I get any display. I?ve checked the power strip and know that power is getting to the computer, but...


Test your PSU or replace it if your power supply units fan is not working your PSU is faulty

One bad lead can cause a computer to continue on a cycle or to shutdown or fail to boot

Test all leads that attach to your hard drive including electrical extensions,IDE,SATA

the leads from your motherboard to your hard drive make sure they have a secure connection and are not faulty or just replace them there probably old and faulty

make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty or just replace them they are probably old and faulty ?
hope this helps

Dec 06, 2010 | Computers & Internet

1 Answer

I came home today to find that my desktop was off after being previously on earlier when I left the house this morning. I went to turn it on and nothing happened. I got down next to the machine and tried...


>This may not be a resolution but it's worth giving it a try: ?
>Unplug power cord from both the computer and the power outlet
>Press and hold power button down for approximately 20-30 seconds(this is what we call Power Drain: it gets rid of electrical charges on the motherboard which may cause these kind of problems)
>after 20-30 seconds plug the power cord back into the computer
>Turn it back ON
>I really do hope this works

>comments suggestions ratings and violent reactions will be greatly appreciated

Sep 23, 2010 | Gateway Computers & Internet

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My Dell XPS 410 computer will not start, won't do anything.There is however an LED light on the Motherboard labled Stdby Led, this is lighted but the compter won't do anything? I am needing someones...


Your computer power button may not be working, or the CPU may be bad and it can also be the motherboard is faulty.You need a new case or fix the power button or try another CPU in the computer or replace the motherboard.

Aug 16, 2010 | Dell XPS 410 PC Desktop

1 Answer

When i cleaned my dell demension i put everything back exactly how it was now when i turn on my computer none of my external devices mouse pc screen keyboard is not turning on i need help


I would first check and verify that the electrical outlet or power strip that they are plugged into is working. If a plug gets in a bind it could have blown a fuse on the power strip or the power strip might have a reset switch on it. Or the power strip might have failed. If you have a uninteruptable powersupply that you plug everything into you will need to confirm that it is working as well, test it and look for reset buttons or a fuse holder on it. Your electrical cords could have been pulled out from the wall outlet itself while cleaning sometimes even wall outlets if put in a bind from pressure will blow a fuse or the cord might pull out just enough that it is not making a good connection.
You might get a lamp with a bulb that you know works and plug it into the same electrical receptical that you have the dell computers power cord plugged into and then test the monitor power source the same way.
If the outlets or power strip are getting power and that is confirmed by testing them, and then you plug in the Monitor and Dell power cords into the sources that you have confirmed are getting power, and they do not come on we have a different problem.
If the monitor is hooked up wrong to the computer or not even hooked to the computer the light should come on on the front of the monitor incicating that it is getting power. If you plug it into a confirmed working electrical outlet the light should come on on the power button of the monitor. If it does not come on then somehting might hve possibly damaged all of the epuipment that was plugged in like a power spike on the electrical lines going into your home, this would be very rare but not impossible.
I am sorry for all of the senerios but you were not really clear on what you were using as power sources going to the equipment and I wanted to try and cover the most common possibilities in one email. Please let me know if this helps

Aug 02, 2010 | Dell Dimension E521 PC Desktop

1 Answer

Sony RX540 had a program that would not shut down after repeated attemps to turn off the computer to reboot. I cut the power strip to have the system shut down after unpluging the computer and plugging...


Replace the power switch as it is either broken or stuck 'on'. You can purchase them pretty cheap (around $5) and are easily replaced providing you have motherboard/computer case documentation. Even if you don't have documentation, the motherboard usually has it written (typically in the bottom left or right of the motherboard) very small where it should be connected to.

Power Switch

Jun 09, 2009 | Computers & Internet

1 Answer

I'm trying to fix a gateway MFATXNIN NMZ 500SE


Sir,
  1. Press and hold the power button down for 10 seconds.
  2. Make sure that the power and hard disk light-emitting diodes (LEDs) are on.
  3. Check the power cable connections:
    • From the electrical outlet to the AC adapter.
    • If applicable, make sure the LED on the AC Adapter lights.
    • From the AC adapter to the notebook.
    • Make sure that the power strip is on.
    • Make sure that the surge protector is on.

  4. Try another electrical outlet.
  5. Disconnect any external devices, like PC cards, digital cameras, or external drives.
  6. Disconnect the notebook from the docking station (if applicable). Remove any power strips and surge protectors. Plug the power cord directly from the notebook into the electrical outlet.
  7. Remove the battery and reinstall the battery. Refer to the documentation that came with the notebook.
  8. Remove any newly installed software or hardware.
  9. Remove any additional memory. Refer to the documentation that came with the notebook for memory removal instructions.
  10. Shut down the computer, and then remove the drives. Refer to the documentation that came with the notebook.
  11. Push the hardware reset (if applicable). Refer to the documentation that came with the notebook.
Thanks Good Luck
Appreciate to rate as "Fixya"

May 21, 2009 | Gateway GT4024 PC Desktop

1 Answer

ACER power 1000 has no power at all


change the power supply, if still nothing then motherboard might be gone

Dec 31, 2008 | AcerPower 1000 (AP1000EA380M) PC Desktop

1 Answer

Power failure


by plugging it directly into the wall... what was it plugged into before. and have you actually taken some other electrical device and plugged it in to make sure the wall socket is still live.
there is also a reset button on most power strips... it may have tripped.

Try those and let us know.

Robert

Sep 07, 2008 | Dell Dimension 5100 (D51L1) PC Desktop

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