Solved

HP pavilion dv2000 DV2415nr not booting all lights on.

Posted on 2011-03-15
13
1,638 Views
Last Modified: 2013-11-08
I have a hp pavilion dv2415nr. With the battery When I turn on all the lights come on no sound and hdd is not seeking. DVD drive does gives off a sound. But with removal of all components and battery removal for the bios nothing happens.
I have tried on ram in. No ram in.
No ram no hdd no wireless no dvd drive. I have checked with external monitor no logo show.
I haven't checked the battery or ac yet. And I havent checked vga chip or cpu chip.
0
Comment
Question by:sorush
13 Comments
 
LVL 3

Accepted Solution

by:
shjacks55 earned 500 total points
Comment Utility
Symptom: LEDs glow, but computer fails to startup or boot, and displays a black screen

in  http://h10032.www1.hp.com/ctg/Manual/c02114796.pdf


Laptops usually require higher peak power than the charger wall adapter power can provide so few can boot without battery. "all the lights come on" so screen comes up blank also? Booting without CMOS backup battery would be pointless, though most modern designs save cmos data to flash. If this happened trying to update (flash) the bios there may be a boot block recovery jumper or key press sequence to go back to default settings.

Normally boards boot up really slow (8 Mhz) and set up the onboard chipsets then increase speed and check motherboard function, giving beep codes or blink codes where the hardware failed. If it doesn't get to the beeping/blinking then the cpu/motherboard died before the tests. The motherboard power supply chip on my old Dell failed (no output) and it was big enough I could solder a new one in place, and it failed without frying anything else. check hard drive connector, should have (maybe not on laptop) SATA power +12, +5, and +3.3 volts, (+/- 5%). You could buy a new motherboard on Amazon,, eBay. etc.
0
 
LVL 23

Expert Comment

by:edbedb
Comment Utility
It is most likely being caused by the flaw in HP DV2000, DV6000 and DV9000 series laptops among others. The motherboard has to be replaced or repaired by reflowing the chipset.
0
 

Author Comment

by:sorush
Comment Utility
Which chip could the problem be caused by?
0
 
LVL 12

Expert Comment

by:Grant1842
Comment Utility
IT IS THE VIDEO CHIP ON THE MOTHER BOARD  . I have Re-flowed several of these video chips with no problem and none of them have cam back to me .
The alternative is to buy a new motherboard.
I usually charge $125.00 to do this procedure as you have to tear it down to mother board level to get to the video chip.
0
 

Author Comment

by:sorush
Comment Utility
Once the motherboard is accessed how do we know its not the chipset or the vga chip? As far as I know the CPU can be removed easily right?
0
 
LVL 23

Expert Comment

by:edbedb
Comment Utility
Some of these motherboards have the chipset and video on the same chip. Others have a separate video chip. On these you would re flow the chipset. The one with the heat sink.
0
What Is Threat Intelligence?

Threat intelligence is often discussed, but rarely understood. Starting with a precise definition, along with clear business goals, is essential.

 
LVL 23

Expert Comment

by:edbedb
Comment Utility
Once you get at it the CPU is easy to replace, too bad that's never the problem.
0
 

Author Comment

by:sorush
Comment Utility
Why aren't chipsets built as good as cpus?
0
 
LVL 23

Expert Comment

by:edbedb
Comment Utility
The flaw is that they stopped using lead in the solder for those chips and the stress from heating and cooling then causes the solder to crack.
0
 

Author Comment

by:sorush
Comment Utility
So its possible that there is nothing wrong with the chip and all that needs to be done is for the chip to be connected again to the contact points?
0
 
LVL 23

Expert Comment

by:edbedb
Comment Utility
It's not only possible but almost certain. Your best option would be to use one of these services on ebay to have it repaired.
0
 
LVL 23

Expert Comment

by:edbedb
Comment Utility
@sorush - Please take a moment to tell us exactly what got the laptop running again. The suggestion you selected covered a pretty large area.
0
 

Author Comment

by:sorush
Comment Utility
I was only able to diagnose the problem. But I was not able to repair it. I've never done soldering etc.
0

Featured Post

Find Ransomware Secrets With All-Source Analysis

Ransomware has become a major concern for organizations; its prevalence has grown due to past successes achieved by threat actors. While each ransomware variant is different, we’ve seen some common tactics and trends used among the authors of the malware.

Join & Write a Comment

System overheating may become a serious problem if not taken care of at the proper time. I am writing this article because I faced a similar problem. Intro All electronic devices produce heat, but computers are a special case - the processors bo…
In the modern office, employees tend to move around the workplace a lot more freely. Conferences, collaborative groups, flexible seating and working from home require a new level of mobility. Technology has not only changed the behavior and the expe…
Sending a Secure fax is easy with eFax Corporate (http://www.enterprise.efax.com). First, Just open a new email message.  In the To field, type your recipient's fax number @efaxsend.com. You can even send a secure international fax — just include t…
Illustrator's Shape Builder tool will let you combine shapes visually and interactively. This video shows the Mac version, but the tool works the same way in Windows. To follow along with this video, you can draw your own shapes or download the file…

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

9 Experts available now in Live!

Get 1:1 Help Now