Question about PC Laptops

1 Answer

Compaq V5201US Notebook Will Not Start/Boot UP

No response when depressing power switch. Adapter DC output voltage is OK, and battery charging light is on (front left) when adapter connected and charging. No other response.
In following no power flowchart in service manual (V5100 Flowchart 2.2), user is instructed to "reset" power to the unit by either depressing the reset pushbutton or using a combination of the standby switch and either the lid switch or the main power switch. There isn't a reset switch on the bottom of the unit, and I cannot locate the standby switch. How do I reset power on this model?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Guru:

    An expert who has written 7 tips or uploaded 3 video tips

  • Master
  • 1,342 Answers

Remove the power adapter and the battery. Hold the power button in for up to 60 seconds to discharge the laptop. Re-apply power and try booting the laptop.

Posted on Jul 20, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My new battery will not hold a charge


Either the charge circuit in the laptop is faulty or the mains adapter is faulty.
When you connect the power adapter into the laptop, does the power LED light up? If not then - The battery adapter or the adapter's power lead or the laptop's power socket could be faulty. Check power adapter's DC plug that connects into the laptop power socket with a multi-meter, the voltage should be slightly higher than the voltage that is printed on the label on the bottom of the adapter. If the voltage is zero or way below the voltage that is printed on the label then the power adapter is faulty and needs to be replaced. If the adapter is OK then connect it to the laptop and power it up, then look at the power/battery charging LED light and wriggle the power plug in the laptop's power socket. If the power/battery LED light flashes and in a certain position this LED light stays firm, then the power socket is either faulty or it has a dry solder joint where it is connected to the motherboard. This can be repaired but it requires the laptop to be completely dismantled to get at this power socket and repair. If you cannot DIY then I suggest you get a quote first.

Oct 10, 2012 | HP Compaq nx7300 Notebook PC

1 Answer

Compaq 610 laptop will not power up, any fix?


Whenyou connect the power adapter into the laptop, does the power LED lightup? If not then -The battery adapter or the adapter's power lead or the laptop's powersocket could be faulty.Check power adapter's DCplug that connects into the laptop power socket with a multi-meter, the voltageshould be slightly higher than the voltage that is printed on the label on thebottom of the adapter. If the voltage is zero or way below the voltage that isprinted on the label then the power adapter is faulty and needs to be replaced.If the adapter is OK thenconnect it to the laptop and power it up, then look at the power/batterycharging LED light and wriggle the power plug in the laptop's powersocket. If the power/battery LED light flashes and in a certain position thisLED light stays firm, then the power socket is either faulty or it has a drysolder joint where it is connected to the motherboard.This can be repaired but itrequires the laptop to be completely dismantled to get at this power socket andrepair. If you cannot DIY then I suggest you get a quote first.

Aug 05, 2012 | HEWLETT-PACKARD Compaq 610 Notebook

1 Answer

My hp compaq laptop charger is not working in the charging port but the laptop work's when the battery is charge and place in the laptop how to use the external battery port


First of all, you need to make sure your power adapter is providing enough power to both run the laptop & charge the battery. A very good way to do this is to compare your laptop voltage & ampere requirements (written on a sticker on the bottom of the laptop) with the voltage & ampere ratings of the power adapter. Voltages should be the same, or the power adapter's voltage about up to 0.5 volts more than the laptop's voltage rating. Amperage of the power adapter should be at least equal to or greater than the laptop's rating. It should never be less than the laptop's rating, or else the power adapter will be providing insufficient amperes to charge the battery. Of course, the power adapter's nominal amperage might be ok, but it degraded on usage. You can verify this by testing using a good or new power adapter.
If the battery did not charge using the new power adapter, take the battery off the laptop, & using a dry tooth brush, scrub in between the fins of the battery connector on the motherboard & on the battery it self, then put the battery back into the laptop & try again.
If this still did not resolve the problem, then the battery itself could be bad. Try it on another laptop, or try a good or new battery in your laptop.
If this did not work, there might be a possibility that the charging circuitry on the laptop's motherboard is defective & needs servicing. In order to do this, the laptop needs to be disassembled & the motherboard checked for defective/burned out components in the area near the DC jack. Any defective/burned out components found should be replaced, or you might need to replace the laptop's motherboard altogether.

DC Jack diagnosis:
1. Test power adapter for output voltage. Bend the power cable in various directions while doing this to be sure that there is no broken conductors in the cable.
2. If power adapter is Ok, connect it & see if the power LED on the laptop will glow when you jiggle the power connector in various directions. If yes, then the DC jack might be loose or damaged, & need to be either re-soldered or replaced.
3. If not, then disassemble the laptop. Remove any components that attach to the laptop's motherboard first (e.g. battery, hard drive, RAM, wireless card, optical drive, ... etc.)
4. Next, remove the keyboard & the LCD screen.
5. Finally, unscrew all screws that hold the upper cover & lower cover together so that you could gain access to the motherboard.
6. Inspect the solder points connecting the DC jack to the motherboard. Make sure that none of them is loose. If any, re-solder them.
7. Inspect the center pin in the DC jack. Make sure that it is not broken or loose. If it is, then you might need to replace the DC jack.
8. When you are done, re-assemble back the laptop.

Sep 22, 2010 | HP Compaq NC6400 Business Notebook

1 Answer

Sony Vaio VGN SZ491N doesn't start or boot. No lights no noises. Tried holding start button 10 seconds, tested power supplies (OK on other machines), been having a problem with the battery being loose...


1. Take the battery out of the laptop & try to turn on the laptop using power adapter only.
2. Make sure the power adapter is not defective. Test the output voltage of the power adapter using a voltmeter. Compare the voltmeter reading to the nominal value written on the adapter or the laptop.
3. The DC jack might be loose or broken. It might need to be either re-soldered or replaced.
4. If you have another processor which is compatible with your laptop's model, try swapping processors & test to see if the laptop will work.
5. The power button could be bad
.
6. The motherboard could be defective & needs to be replaced.

Sep 17, 2010 | Sony VAIO VGN-FS980 Notebook

1 Answer

The laptop doesn't boot. Its dead. I tried connecting the charger, but it doesn't shows any signs of charging. It doesn't even show the laptop is charging.i.e no led is lit when charger is connected.Please...


Hi.

If it is completely dead check the voltage at power adapter DC contacts using a multimeter.

If there is voltage within 0.5 Volts from specifications, then try starting the laptop with no internal battery. A shorted battery may cause the laptop not starting.

If battery and adapter are OK, then the problem is the DC socket in the laptop motherboard. The laptop must be taken apart and the solder joints soldered back. This is a delicate job and must be done by an experienced repairer.

In some case the whole power circuit or the main board may be faulty. Testing is done reading Ohms at DC socket solder joints on main board (or power board, depending on model).

Regards.

Ginko.

Aug 09, 2010 | HP Compaq Presario V5204nr Notebook

1 Answer

Laptop not charging this time


Check power adapter’s DC plug that connects into the laptop power socket with a multi-meter, the voltage should be slightly higher than the voltage that is printed on the label on the bottom of the adapter. If the voltage is zero or way below the voltage that is printed on the label then the power adapter is faulty and needs to be replaced.
If the adapter is OK then connect it to the laptop and power it up, then look at the power/battery charging LED light and wriggle the power plug in the laptop's power socket. If the power/battery LED light flashes and in a certain position this LED light stays firm, then the power socket is either faulty or it has a dry solder joint where it is connected to the motherboard.
This can be repaired but it requires the laptop to be completely dismantled to get at this power socket and repair. If you cannot DIY then I suggest you get a quote first.

Mar 20, 2010 | HP Compaq 6730b Notebook PC

5 Answers

Just bought a second hand acer travelmate 4200. I have never owned a lap top. How do I change from using battery power to outlet power


On the left side, towards the rear is a DC jack. Plug the power cord in there. It should automatically start operating on AC power, and charge the battery.

Feb 24, 2010 | Acer TravelMate 4200 Notebook

3 Answers

Compaq Presario c300 power light blinks..


It sounds to me like there's a short in the AC adapters causing it to have enough power to charge the unit when it's not pulling power, but once it starts pulling power, it basically becomes overwhelmed and can't do both power and charge. There's also the chance that the DC jack [which the AC adapter plugs into] is bad. However I'd suggest checking the adapter first because it's simple to obtain a new one and if it doesn't work, you can most likely just return it and say it doesn't work as opposed to a dc jack being repaired which would have to be done by a professional with the skills to handle it [of course unless it's under warrenty, less than a year old, but judging by the model I'd say it's probably not]

Nov 27, 2008 | Compaq Presario Notebook

5 Answers

My Compac Armada M700 does not power up.


Had the same problem with My Compaq M700 No Boot Or Post. Battery Light Flashes 8 Times, Have to Wait 24 to 48 hrs sometimes longer to get Laptop to Start. Tryed the DC Converter Board Change No Difference same Problem. Noticed When Laptop Did Start Clock Time Was always a Little Off 2-4 Hours sometimes more. So Figure CMOS Problem With Time Issues. Read About Battery Memory Transitor Voltage spike Detection Issues Corrected With Newer Bios Flash at HP Supports. So I Flashed Bios With Latest 686h. During the First Boot After Reflash Battery LED Did flash No Start, After pushing the power button again it Started. And has Every since.So Far Laptop Now Boots Everytime and CMOS Checksum Seems To Keep Time Correct In Windows. The Bios Flash Corrects a Voltage Spike Detecting Transistor In The Charging Circuit. During First Start after flash Bios will run system test on the charging system and Correct CMOS. Worked for Me Hope this Helps a Few.

Oct 30, 2006 | Compaq Armada M700 Notebook

Not finding what you are looking for?
PC Laptops Logo

Related Topics:

345 people viewed this question

Ask a Question

Usually answered in minutes!

Top PC Laptops Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18298 Answers

joecoolvette
joecoolvette

Level 3 Expert

5660 Answers

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

Are you a PC Laptop Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...