Question about HP Compaq 6715b Notebook

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My compaq 6715s screen has gone black. The fan and led's power up, but nothing shows on screen!

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You may have a defective CCFL backlight, it may have the following symptom: Screen flashes on and off or displays reddish pink hue. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickers on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replace the CCFL lamp.
To determine if the video card or the LCD is faulty, connect an external monitor to your laptop and power the monitor up first then the laptop, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight. Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight. It could be a faulty inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out; usually the CCFL lamp fails before the inverter.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out LCD Parts for service, parts, and DIY info Use this link to their WEB site: -
www.ladparts.net

Posted on Nov 14, 2009

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Hp compaq 6720s display problems. The laptop is powered up the Power LED & Wifi LED are on and the fan board is rolling but no activity on the screen and it has been changed same result. What can


sounds like the video chip has gone bad on the motherboard, may have to have a motherboard replacement..to test, connect and external monitor and see if you get a picture.

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Continue reboot loo


There are a lot of possible reasons for this.
1. Fan is bad.
2. Motherboard has gone bad.
Do you still see the Compaq logo when you turn it on?
David

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Hi i have a presario cq60-114em, on power up i get the fan coming on straight away, the power and wireless led on, black screen,the hdd led flashes 2x then a pause then flashes 2x and carrys on with this...


1st Steve I would remove the hard drive and power up and see if you can enter the bios by tapping either F2 or Del keys. If you can get into the bios then great. Shut down and refit the HDD. Try and enter the bios again and see if the hdd is recognised. If not then the hdd is finished. If it does show then your windows installation is corrupt. Try starting it up with your windows cd in the drive and point the bios startup to see the drive a 1st boot device. If this works then try and perform a repair of windows from the disk.

Good luck

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Cq60-212ea screen black power switch on power led on .processor fan on .but not laptop on screen black. Not display show. And not wellcome display show


If your laptop appears to boot up and the hard disk LEDflashes, then the problem is probably a back light fault. This can be a faultyinverter or a faulty CCFL lamp. Please click on this link and follow myinstructions to identify the fault and possible fix :- http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen

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Black screen on booting my Compaq 610 notebook


If it seems like you're accessing the hard drive (drive light comes on, flickers intermittently, then goes off, it's a good chance your screen is bad.

First thing to do is plug in an external monitor and start up the laptop. If it comes up with windows, you know it's the screen.

To find out if it's the backlight, or the lcd, toggle the monitor function and shine a flashlight on a slight angle to the screen. If you can faintly see what was displayed on the external monitor, then the backlight inverter is probably bad.

If the external monitor didn't come up, you're probably looking at a motherboard.

The good thing is that all of those are covered for one year under Compaq's warranty, on a new machine.

If you are able to use the external monitor, back up your data, because HP/Compaq usually reformat the harddrive. Additionally, if you've added memory, pull the cards. They want it sent back the way it came from the factory.

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When I opened my laptop this morning my computer won't come on. The screen is totally black. I took out the battery and put it back in ---- still nothing. I plugged it in with the power cord --- nothing! What is wrong with my HP Compaq Presario CQ60?

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Monitor is completly black


it shows that the windows gone corrupt, need to repair by installtion/bootable cd otherwise you may have to re-install windows.

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Presario 6350CA won't boot


I don't know that I'm going to be a great deal of help, but here is the link to the support site for you Presario:

http://h10025.www1.hp.com/ewfrf/wc/product?product=390426&lc=en&cc=us&dlc=en&lang=en&cc=us

Here's a link to another page on the Compaq site that specifically talks about power supply problems:

http://h10025.www1.hp.com/ewfrf/wc/document?docname=bph06788&lc=en&cc=us&dlc=en&product=390426&lang=en#N514

They discuss a flashing power led on this site, but I believe they are referring to an led on the power supply itself. Perhaps the led on the keyboard and the led on the power supply are both flashing...

Good luck. I hope this helps.

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