laptop not booting up.

[rocvin]

Hi... Ham using HP pavilion DV41415TU.  My laptop is not booting up... when i switched it on CAPS LOCK and SCROLL LOCK are flashing and the screen is dark[no display].I have tried switching it on with and without the battery[using d power cable]. Waiting for your response. Plz assist me asap.

[burnin_the_chip]

hi

thats not a good sign could be 1of many things and it could be hard to trouble shoot it but ill try to help

did it ever get a blue screen saying machine check exception recently then shut down before this happend?

does it post (power on self test) display the first hp logo right as soon as turned on (before windows boots)

[elstan018]

Hi, if your CAPS and SCROLL lock are blinking, it means that the computer is telling you the main problem. Now what you have to do is count how many times it blinks between pauses. (For example: blink, blink, blink, pause, blink, blink, blink = 3 flashes or 3 blinks) This is a code and the computer is trying to give you a specific area in which to troubleshoot the problem. The meaning of these codes are known by the phone tech support only, so if you're still in warranty, give HP a call.

The article below is from the troubleshooting steps of no boot issue for your specific laptop model.

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01443371&cc=us&lc=en&dlc=en&product=4036874&tmp...

Symptom: LEDs blink or computer beeps but does not start

SymptomPossible Cause

When you press the power button: some of the LED lights on the keyboard blink or a beep tone is made to help identify specific hardware component errors,

Blinking LEDS on startup usually indicates a problem with the basic functionality of a critical component, and you will need technical assistance to resolve the error. The most commonly used LEDs are those located are near the Caps Lock and Num Lock keys. The number of blinks in a series is used by a technician to help diagnose a problem with specific hardware components. The number of blinks and their meaning is different for different notebook models.

[burnin_the_chip]

mabey this will help pin point the issue a is definatly a hardware problem

Battery power LED off, and Caps Lock/Num Lock off	Battery or AC Adapter	AC adapter not connected or failure Battery low charge or failure
Battery power LED blinking	Battery	Insufficient charge on the battery
Blink: 1 - Caps Lock/Num Lock	CPU	CPU not functional
Blink: 2 - Caps Lock/Num Lock	BIOS	BIOS corruption failure
Blink: 3 - Caps Lock/Num Lock	Memory	Module error not functional
Blink: 4 - Caps Lock/Num Lock	Graphics	Graphics controller not functional
Blink: 5 - Caps Lock/Num Lock	System board	General system board failure
Blink: 6 - Caps Lock/Num Lock	BIOS	BIOS authentication failure

[burnin_the_chip]

it could be that the cpu is overheating try cleaning inside by the fan if you havent yet

[Louie_a]

Actually that worked !! Starting the laptop, the screen remains blabk and the scroll and caps lock key do blink in series of 4 blinks before a pause. So that means the graphics controller is not functional. Any idea where I go from here?

[nancygale55]

The screen is dark and lights are flashing next to the caps lock button and the scroll button on my Pavilion dv5-1002nr PC.  Any answers??

[RobeGrah]

That sounds like a hardware issue, you can follow this link to interpret blank screen LED error codes to try and nail it down.

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01443366&tmp_task=solveCategory&lc=en&dlc=en&cc...