Question about HP Compaq nc6220 Notebook

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No screen activity

There is no activity on the monitor at all. Power up, the computer spins the drive, lights are working, but no screen activity. Not even a motherboard boot screen. Is there a way to fix the computer or does it need to be hacked?

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Plug in an external monitor to see if it is booting normally and it is only a screen malfunction.

If you plug in an external monitor and the screen works then it's just a monitor issue.
If the external monitor doesn't light up then try unplugging the power cord, taking out the battery, holding down the power button for a minute and then plugging the AC back in trying to power it up.

If it doesn't power up. Then it's probably a motherboard issue.
I would get an external hard drive enclosure (2.5) and take out the harddrive and plug it into another computer to take the data off.
You can then send in your computer to repair somewhere but for the price, you may as well buy a new one.

Posted on Mar 14, 2008

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Posted on Jan 02, 2017

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I have problems in sarting up my EI System laptop ,the power light is on but no display on screen


The power light will only show whether power is reaching the machine. The important light is the hard drive activity light and perhaps the wireless activity light.

If the power light is all you have you should take your laptop to the computer doctor but if the hard drive light shows activity it would be worth connecting it to a separate monitor and if it then produces a display you might be able to figure out what has happened.

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I always start with seeing if when connecting an external monitor to the Laptops VGA output is the same or different to what you see when just via the Laptops screen. Reason is so that can narrow down to JUST Laptop screen or graphics chip, maybe even OR connection at cable either end, Motherboad or Screen.
Is the Laptop turning on alright i.e. no frying, I assume it has dried out from when it got wet. localised to screen only or possibly inside of Laptop....Lights up with power, fan spins hard drive spins, right? If so try an external monitor.

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EMachines eMD620 suddenly shutdown and not boot anymore


When this happened was the laptop overly hot? If the laptop's head got too high it could have shutdown to protect itself. It wouldn't boot until the heat had disparate. Sit you laptop aside for about 30 minutes and see if it will boot then. If it does you might want to check out a cool mat.


http://www.amazon.com/gp/product/B008TO35G0/ref=sr_1_3?ie=UTF8&qid=1358444754&s=pc&sr=1-3

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My nec p9120 has power to it and the wi-fi is on but the fan and everything else is not running and my lcd screen stays black


Try connecting to an external monitor and see if that works. Is the hard drive activity light flashing at all?

Mar 20, 2012 | NEC Computers & Internet

1 Answer

Black screen no POST after installing new Intel motherboard d865dlgl


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 connections and are not faulty or just replace them they might be 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 even the electical extensions


even something as small as an electrical fan and its lead can cause this problem or just replace them they could be faulty a computer needs all electrical power and data to continue through every working device and to have an end so any faulty leads will end up with a computer error


make sure your graphics card is securely seated with no dust built up or in the socket

if you remove your graphics check the socket to make sure its dust free

restart your computer then reinstall it this should activate found new hardware wizard


hope this helps you

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1 Answer

No picture screen black


un plug the monitor cables power cord everything turn off the computer the reconnect everything power back up turn on the monitor should work then

Feb 06, 2010 | Dell E173FP 17" LCD Monitor

1 Answer

My dell e173fp monitor has quit working. The power light continually blinks when power is applied, even without having to turn it on. An identical substitute monitor works fine on the computer system. ...


Is the power blinking amber? This is a DPMS power-save mode. With the computer disconnected and the monitor on, do you see the colored self-test block floating around? With the monitor on, computer connected, and you still have no image displayed, take a bright flashlight and examine the screen closely. If you can see a very dim display in the screen, the fluorescent tubes which light up the *background* and provide the vivid picture(sort of like a how an x-ray picture viewer works) are defective. The power light blinking may be the power supply sensing the non-functioning tubes or it could just be bad. If your display is under warranty, replace it. If not, trying to have the monitor repaired for this type of problem is almost as costly as a new one--and there won't be an active warranty on anything else that might fail. Hope I helped you.---Rick

Sep 10, 2009 | Dell E173FP 17" LCD Monitor

1 Answer

Screen does not turn on but green light is on.


Green light indicates the monitor is getting power. Nothing coming up on the screen indicates, No Signal.

No signal from the computer. This means the computer itself isn't working.

A bad power supply in the computer can cause this. A bad power supply is the leading cause of desktop computer failure. It is replaceable, and can be done by the owner relatively easy.

You may have a computer tower that the Power light comes on, you hear fan/s spinning, (Including the Power Supply fan), and it sounds like the harddrive is running.

ALL the lights in your computer use less than 1 Watt.
EACH fan uses 2 to 3 Watts.
A harddrive sitting there spinning in an endless loop, consumes about 2 to 3 Watts.

A Processor uses 51 to 125 Watts. Depends on what Processor it is.

A weak Power Supply will have enough power for lights, fans, and that harddrive sitting there spinning.
It won't have enough power to turn on the Processor.

[No processor operating, then the harddrive sits there spinning in an endless loop, because there is no processor to find the boot sector]

For a test, connect your monitor to a know good computer. See if it works.
Now connect that other monitor to your computer.

Sep 05, 2009 | Sampo P7011M (Silver) 17 in. Flat Panel...

1 Answer

Hp computer. hard drive light is solid yellow pc non working


What has transpired is the power supply is bad. Electrolytic Capacitors inside have failed. These capacitors relate directly to the voltage power rails of the power supply. They are filters.

Little more detailed.
Your computer power supply converts AC electricity into DC electricity. (A flashlight battery is an example of stored DC electricity)
AC comes into input Electrolytic capacitors. Goes to a rectifier bridge, and on through various other components. Along the way, this DC voltage is considered 'Raw'. It needs to be a steady, 'clean', supply of DC voltage. There are Electrolytic capacitors used in the final stage, to convert the 'raw' DC to 'true' DC.

In a computer power supply the Electrolytic capacitors are the weakest link. They are usually the first component to go out.

You computer power supply converts AC voltage into three DC voltages. 3.3 volts, 5 volts, and 12 volts. These are the power rails.

When one, or more Electrolytic capacitors are weak, they make a weak voltage rail.
To simplify explaining the construction of an Electrolytic capacitor, let's just state they are small aluminum 'cans', and have a seal at one end, or both ends. Inside there is an Electrolytic paste.
This paste can break down, and when it does it forms a gas. (Hydrogen gas) This gas expands inside the 'can', pushes up on the seal/s, and makes Electrolytic paste ooze out.

So much paste loss, and the capacitor can operate in a weakened state. Too much paste loss, and the capacitor fails.

ALL the lights in your computer use less than 1 Watt. EACH fan uses 2 to 3 Watts. A harddrive just sitting there spinning, may use up to 5 Watts.

A processor uses 55 to 125 Watts! Depends on the make and model.
Since the power supply is to weak to provide enough power to turn the processor on, the harddrive isn't activated. It just sits there and spins. No Boot record on the harddrive is found, so no Operating System is going to be running. (WinXP is an example of an O/S)

This essentially means No computer! Harddrive activity light indicates yellow, then goes out. There is no harddrive activity.

No signal from the computer, because the computer isn't working.
Monitor stays in Standby, because there is no signal from the computer.
Power supply failure is 70% of computer issues.

Why?
Owner neglects to keep the inside of the computer, and the power supply clean. Doesn't use a can of compressed air for computers regularly.
Also there is another issue that the owner has nothing to do with.
Capacitor Plague.
http://en.wikipedia.org/wiki/Capacitor_plague

Solution? Replace the power supply.

I know the above info may seem like a 'Hard pill to swallow', but as stated. A weak power supply will still spin fans, and light lights.
Harddrive may spin, or spin up, then stop.

The processor isn't getting enough power.

Apr 12, 2009 | Sony VAIO Digital Studio PCV-RX540 PC...

1 Answer

Dead compaq laptop, no boot activity


Larnold..Sounding like you need to check the LCD Power Inverter Circuit board.. this is located inside the screen a long rectangular circuit board that sends power to the screen backlight & Display Panel.. Could also be a Bad Backlight.. Try Booting it.. Hold it up to a light and look closely at the screen.. If you see a faint image but no light, it is the Backlight, if Just Black No Activity then its most likely the Power Inverter, OR a Bad Video Card.. You can test the VIDEO by Connecting the laptop to a Computer Monitor or similar with the laptops VGA Serial port.. then Use your function Key and Switch to 2nd Display.....(one of your F keys.. ).. If it Shows up on another screen, Its a Display problem and not the video card... Hope This Helps alittle.. Cheers

Jun 02, 2008 | HP Compaq Presario V6000T Notebook

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