Question about ASUS U52F-BBL9 Laptop

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I cannot get my Asus U52F laptop to turn on.

The lid to my Asus U52F laptop was accidently closed without the computer being shutdown. Now the power light is lit up but the computer won't turn on. I plugged in the power supply but the battery light does not light up.

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Unplug from AC, remove battery, plug into AC , boot normally.

Posted on Dec 06, 2012

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Most likely the laptop went into Sleep Or Hibernate.

If pressing a key on the keyboard does not bring up the log in screen or the desktop then try pressing the Power button. After a few seconds, Windows should come back up on the display.

Posted on Dec 06, 2012


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Posted on Jan 02, 2017

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SOURCE: ASUS EEEPC 1215N battery won't charge with a


The most common reasons for power issues are the battery, power jack and power adapter/cord.

Power off and remove the battery. If the laptop powers on with just the adapter connected, your battery is faulty.

If you move/wiggle the power adapter at the point where it connects to the laptop, and the power goes off and on, the power jack is the problem.

The power jack is inside the laptop and either needs soldering or replacement. If a power jack problem, it should be addressed by someone knowledgeable.

If no change, the power adapter is probably faulty and needs replacement.
Hope this helps.

Posted on Oct 13, 2011

  • 39 Answers

SOURCE: ASUS A8JP Will Not Power On

"When the charger is connected to an AC source, the green LED shines steady and bright."

are you talking about the led on the AC-adaptor? cause if its that led that dims down, its a defective ac-adapter (even tho you still might not believe me). replace it and try again.

how would you know that the battery is fully charged?

please rate my solution after you have tested if it works out for you :)

Posted on May 29, 2009

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SOURCE: power light comes on, but will not boot, also fan doesen't come o

Without looking at it sounds like a dead motherboard. You should be able to take it to a local shop and have then check it out for about $35-$50

Posted on Dec 29, 2009

Testimonial: "thank you!"

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SOURCE: My asus eee pc 1005he

Does it beep at you? Sounds like your PSU is pooped to be honest (unless you get beeps), I would take it to a repair shop and ask for a new power supply unit. Shouldn't set you back too much, don't get ripped off!

Posted on Jan 06, 2011

  • 1288 Answers

SOURCE: My Asus Altec will not

There is no reset as such, however you can try the old trick of removing the battery and ac adaptor, pressing the power on button and holding for 30 seconds, then reconnecting the mains supply (not battery) and see if it will then boot.

If this fails, you need to check the following:

  • check the power supply, the led should be bright green and not flashing, if it is, suspect the power is not reaching the laptop.
  • Check the security of the dc jack as it enters the laptop, if loose or sloppy, the jack port will need replacing
  • With a multimeter set to 20 volts,and the power supply plugged in, touch the RED terminal of the meter to the INNER part of the jack and the BLACK terminal to the outer of the jack. Getting less than 20 volts (give or take a couple of volts) means the adaptor is not putting out power.
  • If this fails, and / or you try another adaptor and it fails also, you will need to open the laptop. (google for a manual on this or you tube video)
  • On the motherboard, there will be a small ceramic fuse near the DC jack, using a multimeter set to OHMS, touch one probe to to one side of the fuse and the other to the opposite side, you should get a reading, if not, the main fuse is blown and will need replacing. (There may be another fuse near the battery, test this also to prove the battery circuit is working)
  • If the fuse gives a reading, I THINK this laptop has a DC jack with wire to motherboard not soldered onto the board, again using the multimeter set to OHMS, probe the positive (inner part of the jack socket) and connect the other probe to the terminal that connects to the motherboard (positive terminal) There may be 4 connections, 2 neg and 2 pos.
  • If the test fails, replace the socket.
After that, the likelihood is that there is a fault on the board and will need more specialist investigation

Posted on Jul 18, 2011

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Sorry...I did not come up with any service manual for your ASUS U52F-BBL5 anywhere on the net in my searches.
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Just blow the air stream in the exaust first, then the intake,you will keep reversing the air flow untill all the dust is out of the computer.
Do not over spin the fan.
This may eliminate your heating problem.
Please take time to rate me

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