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Compaq Presario CQ 20 start up problem

Hi^^ thanks for the response.. thank you :)
yeah.. i m having problem with both ac power and the battery -

i disconnected my Presario with it, hold the start up button for 30 seconds, then tried both ac power and battery seperately
and both wont work -

perhaps you might know what's the problem and how i can fix it?

thanks once again :)

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The sound you hear is the hard drive starting, and after a few seconds stop because there is no communication with the main board.

Most likely, your main board is dead, if it was a minor problem, you should hear some beeps (indicating the problem).

You are going to have to take to a repair shop to test it.


Good luck



Posted on Dec 12, 2008

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Posted on Jan 02, 2017

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My compaq is power on for 2 second and off , how to fix is thank you


You need to print this out-on someone else's computer. Hope it works for you!
Remove the battery and charger/ac adapter/power cord from your Compaq Presario F700 laptop, press and hold the power button for 20 seconds to discharge any residual current inside the Compaq Presario F700 . This clears your RAM and is like a hardware reset. Replace the battery and charger/ac adapter/power cord and turn your Compaq Presario F700 laptop on.

Boot in "safe mode". As it starts up press F8, the computer ask you if you'd like to start in safe mode. Highlight "safe mode" and press enter. See if your laptop is booting up ok .

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Uninstall unnecessary programs and applications.

Scan with a antivirus program

Scan with a spyware/malware program

DEFRAG C:

CHKDSK C:

Clean up and repair registry problems with registry repair software of your choice

If the problem persists, did you check if it could be your Compaq Presario F700 laptop power cord or power source problem? Defective or insufficient power supply might cause error messages that are misleading. Take the battery out and power on your laptop with the charger only. Make sure your Compaq Presario F700 power jack and charger plug tip are securely connected. Did you notice the power jack loose? You can find laptop power jack on ebay. Fixing and soldering the power jack requires professional skill though. The charger green/blue LED should be on. If not, replace the defective charger. Compaq Presario F700 laptop battery charger, especially its power cord/cable, lifespan is limited and does not last forever, consider buying a lifetime warranty charger online from company like www.topmic.com

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