Question about Dell Inspiron 1720 Notebook

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My dell 1720 will start to boot, the hard drive light flickers about 6 time then stops. the backlight comes on and then laptop does nothing else

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Did you ever find the solution to this problem? My computer is doing the exact same thing. I have been told by a couple people that it is the motherboard. I hooked it up to an external monitor also and nothing. Thanks for any help

Posted on Sep 27, 2010

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Hello,
Your problem may be the video card. Also, download Hirens Boot CD( google it) and burn the iso onto a CD. Then plop it into your machine, and hit F8. See if it boots that up.

Posted on Aug 22, 2010

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When you boot up the laptop press F10 to bring up an list of devices to boot up from, select the CD drive.
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Go into the BIOS setup and to the Boot start up and move the CD to the top as the first boot device with the hard disk as the second device.
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Hello,

Some laptops will show the hard drive icon light up when the pc start up and then nothing. (not often but I have seen a few) If your system is not booting after a few seconds and no hard disk light flickerring on and off, you ether have a bad hard drive or the hard drive may not be properly seated to the disk connection.

As your pc boot up, go into the BIOS and make sure your system is "seeing" the disk. if it not, you may need to replace the disk. If it does see the disk, reseat the disk making sure it is fully connected the disk connector. Reboot your pc. If it does not boot, replace the disk.

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Screen remains dark after pushing power on button. Three green lights flicker for a few moments then go out.


Please follow the diagnosis outlined in this article to check whether the backlight lamp or the inverter board are the root cause of the problem or not:
http://www.fixya.com/support/r6430776-troubleshooting_laptop_power_failures

If you connect the external monitor & nothing is displayed on it, then this means that both the backlight lamp & the inverter board are fine. The main indicators in these cases are the sound, and the hard drive LED on the laptop case. If the laptop sounds just like it always does for a minute or two after being turned on, it means it's going ahead and booting the operating system, but the video processor or part of the motherboard circuit for video output has failed. If the laptop just sits there and beeps when you turn it on, or if you hear the fan but not the hard drive chuckling with its active LED flashing away, it means the laptop isn't getting as far as trying to boot the operating system. While this could be due to any number of hardware problems, the most common and easiest to
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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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The flickering is most likely the florescent backlight having a hard time starting, Just like in a light fixture, as it gets old, it takes longer to warm up to get full functionality.
If under warranty, contact Dell for a replacement, if not, then when it becomes untenable, replace the monitor. Prices are dropping drastically, an new 20 or 22 In can be bought for about $150 or less

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I get a black screen with the mouse everytime i boot to windows


Is it black all the time? From when you start your computer to when you turn it off?

Sounds like the backlight is bad.

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1 Answer

Laptop screen stays blank at bootup


First try holding down the insert key while booting. Next either your F1 or F2 key will get you into bios.
Try pressing those keys alternately while booting to enter setup. If you get to bios follow the previous poster's advice.
Try re seating the ram boards and the hard drive. Make sure you don't have any usb flash drives installed.


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1 Answer

Won't follow through on start-up process


If you hear the hard drive spinning and you think Windows is working but you can't see an image then :-
You could have a defective screen - a defective inverter or a CCFL lamp or simply the video cable needs reseating. After reseating the video cable and the problem is still there then :-
To determine if you have a LCD screen or video card problem, read this and follow the instructions.

Defective CCFL backlight, it may have the following symptom:

  • Screen flashs on red/pink and off.
  • Picture stays on in red and slowly be come normal.
  • Picture flickering with dim display or appear black.
  • Picture flickering 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 replacing the CCFL lamp

Connect an external monitor to your laptop and power it up, 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 and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out www.lcdparts.net for parts, repair service and DIY info.

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