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When power os switched inonly leds glow but nothing comes on screen.

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Hi there,

try to unplug every thing connected to the laptop, even the power supply. Now disconnect the battery. Now press and hold the power button for 30 seconds.

Reconnect the battery and power to the unit. now try to power on the machine.

You should be good to go.

In case that this does not help, I suggest you visit the service station

Posted on Jul 09, 2010

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Posted on Jan 02, 2017

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When i press the power button, the red light begins blinking blue, the screen flashes once and the tv never comes inon


These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
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If blinks continue without any pause, the main board is faulty.

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I have got a hp pavilion dv5000, when I turn on it the screen goes blank.

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If I try to click on caps lock or num lock, leds don't respond to commands. I tried the hard reset pressing the power button for 30 seconds with the battery and the power removed. Nothing to be done by connecting an external monitor....

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Do any lights/LEDs glow when the unit is plugged in? If not, you could have a bad charger or battery, If you do see blinking or glowing lights when plugged in, but no display (and you are sure the on/off switch is in the on position) try hooking up an external monitor to see if the built in screen is faulty or even deselected from use. It is possible, if you do in fact have power, that a bios message cannot be displayed on the built in screen.

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When pressing the power button the blue LED on the front for power, hard drive illuminate briefly and then go out. The LED about the mouse pad does the same as does the DVD drive. Does this sound like...


  1. Check your power cord & adapter.
  2. If its working then check the battery, reseat the battery & check.
  3. If available then check with another battery.
    If no, then remove the battery & switch on the PC in AC mode.
  4. Check if battery charging indication or AC power on indication is glowing. if not then need to change ur motherboard.
  5. If indication is OK, but could not power ON then check ur RAM for any loose connection or dust. clean & reinstall.
  6. If still no display, connect an external monitor, check if display is coming. If Display is coming then your LCD need to replace.
  7. Still nothing change, take it to a service centre.

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Nothing to worry Just your LED has given way due to long usage. It seems you never switch off your UPS or power supply properly because you can monitor for yourself even after shutting down your red laser on the mouse will keep on glowing until you switch off the power supply to CPU. You can use your mouse without that LED also.

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