Solved

Some of laptops lights turn on but laptop will not run.

Posted on 2010-08-28
9
536 Views
Last Modified: 2013-12-11
I have an HP laptop dv4-2145dx.   THe pin inside the charger connector broke off after it was bent.   I purchased a new replacement on line (not an HP cable).  It is an output of 19V 4.74 A.   When I pug it into the computer, the light where you plug it in lights up and the lightning bolt on the front lights up.   When I turn the computer on, other lights such as the wireless light and the sound lights come on and the power light comes on.  But the screen doesn't come on, the lights for the charger, caps lock and the scroll lock all blink.  When I shut the laptop down the light for the charger stays on constant.   Any ideas why this is happening?
0
Comment
Question by:syssolut
9 Comments
 
LVL 2

Expert Comment

by:PirtatePete
ID: 33549700
It may be that the internal diameter of your new power supply plug is larger than the pin in your laptop.
If this is the case, then with only a small amout of surface area contact, you would not be getting enough charge through to charge your battery, or power all the necessary components in your laptop.
0
 
LVL 10

Expert Comment

by:MiniDevo
ID: 33549702
Sounds like the adapter only has enough power to charge the battery, but not the battery and the pc as well. Either the output isn't high enough, or something similarly. Try removing the battery and booting up on adapter alone.
0
 

Author Comment

by:syssolut
ID: 33549746
I took the battery out and hit the power button and same results.   Could it be something else like the MB?   THere is no post beep either.
0
Easy, flexible multimedia distribution & control

Coming soon!  Ideal for large-scale A/V applications, ATEN's VM3200 Modular Matrix Switch is an all-in-one solution that simplifies video wall integration. Easily customize display layouts to see what you want, how you want it in 4k.

 

Author Comment

by:syssolut
ID: 33551019
I let the laptop sit with the new charger attached.   After a few hours I pulled the cable and tried starting it up.   Same thing.   The blinking caps and scroll lock are blinking in fours.   Four blinks stop for about five seconds then 4 blinks again.   Again, could the motherboard have been damaged if the old charger was forced and the middle wire (a coax wire) was bent over to the very side of the charger tip?   It just sits there with power light on, wireless light lit, light near finger pad lit and the sound scale lit.
0
 
LVL 2

Accepted Solution

by:
PirtatePete earned 500 total points
ID: 33551149
OK, if each of the num and caps lock lights blink in a 4 set series, then your graphibs adaptor has failed. This is diagnostics service. Please see this link for more information.
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01443366&cc=us&dlc=en&lc=en&jumpid=reg_R1002_USEN
Hope that helps.
0
 
LVL 12

Expert Comment

by:Grant1842
ID: 33551774
As PiratePete says lights could give you the answer.
Have you connected it to an external video source to see if you get video that way ?
0
 
LVL 92

Expert Comment

by:nobus
ID: 33552108
check if you can use another adaptor to test (from a friend) - to be sure it is the adaptor, or not.
0
 
LVL 2

Expert Comment

by:PirtatePete
ID: 33552116
If you check the link in my above post, you will note that it gives all the blinking combinations straight from the HP webpage that deals with the Unified Extensible Firmware Interface (UEFI) for diagnostic purposes.
It is the graphics adaptor.
0
 

Author Closing Comment

by:syssolut
ID: 33552769
I called HP and they agreed that it is the video controller.  They are fixing it under warranty.    Thanks
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I am not new to IT, I have been working in the field since 1985.  But recently I came up against something that stumped even me (it doesn't happen as often as I would like).  I was running a screencasting session from the laptop to my TV via ChromeC…
In this article you will get to know about pros and cons of storage drives HDD, SSD and SSHD.
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …
In a recent question (https://www.experts-exchange.com/questions/29004105/Run-AutoHotkey-script-directly-from-Notepad.html) here at Experts Exchange, a member asked how to run an AutoHotkey script (.AHK) directly from Notepad++ (aka NPP). This video…

821 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