Question about HP Pavilion zd7020US Notebook

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Display problems I have a zd7020us. The display is red, and flickers. i've updated the drivers , flashed the bios, and adjusted all and any settings.

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  • Allen69 Nov 14, 2007

    Than you for your solution. I'll test your theory out and see what comes of it. Thank much

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  • 324 Answers

Doesn't sound real good. Probably the LCD panel or driver chip. The chip is normally a part of the mother board. You might want to try reseating the LCD screen cable on both the LCD end and the motherboard end. That may resolve the problem. If not, try plugging in and external monitor. If you get a good display on that, you probably have a bad LCD, although there is still the possibility of the motherboard being bad.. If you don't get a good display on the external. you have a bad motherboard.

If you need any additional information, please feel free to ask. If this information has assisted you in the resolution of you problem, please return here to give my assistance an appropriate final rating. If this information has answered your question, and/or lead to a resolution, please rate it as "Fixya!".
Thanks you, and have a super day!
Ron-

Posted on Nov 14, 2007

  • Ron Roske Nov 14, 2007

    Your welcome.
    Ron-

  • Ron Roske Nov 19, 2007

    Hey Allen69!
    Just checking in to see how you are coming along. Had an additional thought for you. What you might have is a bad LCD backlight. Not that familiar with your particular model, but on some laptops they aren't all that hard to replace. And they normally run in the $5-$20 range. When they start going out, they will sometimes give an overall rosy glow to the display. Don't know if that was what you were referring to by the display being red.
    Ron-

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Laptop computers have LCD displays that are sensitive to many things. LCD displays have faults that sometimes produce a flickering screen, lines, dots or a faint display. These screens are sensitive to magnetic fields or electronic items near the computer. Speakers, cell phones, lights and other electrical items are examples. Your display also could be flickering due to software issues such as the video drivers or hardware issues relating to the inverter going bad or the LCD screen itself needing to be replaced. Trace the cause of your problem to come to a resolution.

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2.Reset your resolution and refresh rate.
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Right click an open area on your desktop. Click "Properties" in the drop-down menu.
Click the "Advanced" button at the bottom of settings tab. Another dialog box appears. Click the "Monitor" tab. Change the Refresh rate to your default, or 60 hertz. Click "OK."
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Click "Start, Control Panel." Find and click "Appearance and Personalization." Click "Adjust Screen Resolution." Change resolution to the default, or 800 x 600. Click "Advanced Settings." Click the "Monitor" tab. Change the refresh rate to the default, or 60 hertz. Click "OK."
Windows 7:
Click "Start, Control Panel." Find and click "Display" Click "Change display settings" on the left side. Change screen resolution to 800 x 600. Click "Advanced Settings" in the lower right. Click the "Monitor" tab. Change the refresh rate to 60 hertz. Click "OK."
3.Check the computer's surroundings. Move away any speakers, fluorescent lights, fans, cell phones, radios and any other electrical device that can cause flickering. Temporarily move electrical items away from the computer to see if they are producing this issue.
If the flicker stops, put back one item at a time to determine what is causing the problem.
4.Connect an external monitor to your laptop computer to see if that screen is also flickering. If there is no flicker, then the problem is strictly with the laptop, indicating a possible hardware failure. Contact the manufacturer for a replacement LCD.
If the flicker continues, go to next step.
5.Reset/Update your video driver. Click "Start" and right-click "My Computer." Click "Properties." The "System Properties" dialog box will appear.
6.Click "Device Manager." A list of items will appear. Click the (+) sign next to "Display Adapters."
7.Right-click the video adapter and click "Uninstall." Confirm removal. Restart the computer. The video driver will automatically reinstall itself.
8.Check to see if the flicker still exists. If so, go to the manufacturer's website. Download and install the newest video driver and BIOS for the computer.
9.Restart computer once drivers are installed. Continue to the next step if there is still flickering.
10.Open up your display screen all the way. If the flicker stops by opening it a certain distance, it is the display inverter. If the flicker still exists, the LCD screen should be replaced.
11.Contact the manufacturer of the computer for more information and a possible replacement inverter and LCD display. This will depend on the manufacturer and the computer itself.

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Laptop computers have LCD displays that are sensitive to many things. LCD displays have faults that sometimes produce a flickering screen, lines, dots or a faint display. These screens are sensitive to magnetic fields or electronic items near the computer. Speakers, cell phones, lights and other electrical items are examples. Your display also could be flickering due to software issues such as the video drivers or hardware issues relating to the inverter going bad or the LCD screen itself needing to be replaced. Trace the cause of your problem to come to a resolution.

1.Turn off the computer. Disconnect all external devices. Turn the computer over (bottom facing up). Take out the battery and reseat it. Turn the computer on.
2.Reset your resolution and refresh rate.
Windows XP:
Right click an open area on your desktop. Click "Properties" in the drop-down menu.
Click the "Advanced" button at the bottom of settings tab. Another dialog box appears. Click the "Monitor" tab. Change the Refresh rate to your default, or 60 hertz. Click "OK."
Windows Vista:
Click "Start, Control Panel." Find and click "Appearance and Personalization." Click "Adjust Screen Resolution." Change resolution to the default, or 800 x 600. Click "Advanced Settings." Click the "Monitor" tab. Change the refresh rate to the default, or 60 hertz. Click "OK."
Windows 7:
Click "Start, Control Panel." Find and click "Display" Click "Change display settings" on the left side. Change screen resolution to 800 x 600. Click "Advanced Settings" in the lower right. Click the "Monitor" tab. Change the refresh rate to 60 hertz. Click "OK."
3.Check the computer's surroundings. Move away any speakers, fluorescent lights, fans, cell phones, radios and any other electrical device that can cause flickering. Temporarily move electrical items away from the computer to see if they are producing this issue.
If the flicker stops, put back one item at a time to determine what is causing the problem.
4.Connect an external monitor to your laptop computer to see if that screen is also flickering. If there is no flicker, then the problem is strictly with the laptop, indicating a possible hardware failure. Contact the manufacturer for a replacement LCD.
If the flicker continues, go to next step.
5.Reset/Update your video driver. Click "Start" and right-click "My Computer." Click "Properties." The "System Properties" dialog box will appear.
6.Click "Device Manager." A list of items will appear. Click the (+) sign next to "Display Adapters."
7.Right-click the video adapter and click "Uninstall." Confirm removal. Restart the computer. The video driver will automatically reinstall itself.
8.Check to see if the flicker still exists. If so, go to the manufacturer's website. Download and install the newest video driver and BIOS for the computer.
9.Restart computer once drivers are installed. Continue to the next step if there is still flickering.
10.Open up your display screen all the way. If the flicker stops by opening it a certain distance, it is the display inverter. If the flicker still exists, the LCD screen should be replaced.
11.Contact the manufacturer of the computer for more information and a possible replacement inverter and LCD display. This will depend on the manufacturer and the computer itself.

I hope you find it very helpful. Thank you for using fixya.com

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1 Answer

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1 Answer

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check in the bios
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regards
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CHECK IN BIOS. If the screen is flickering in BIOS then it is hardare issue.

1.Please power ON the notebook, Keep tapping F10 as soon as you power it ON.
2.Press the F9 key to reset the BIOS defaults, it will ask to restore defaults. Hit Yes.
3.Press F10 and save the changes.
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its not your display.... your A/C adapter is losing connection.

your brightnees is set to LOW on battery, and HIGH on A/C... which is why you think it flickers.. it is just losing and gaining A/C connection.. so it goes bright, then dark, then bright, then dark.. or A/C, then battery, then A/C, then battery... you understand?

try holding the A/C cord, where it is plugged into the back of the laptop, in one spot.... then move it to another spot and hold it there... does the problem stop? Then your A/C cord has a bad connection to your motherboard, which means you need a new motherboard.

good luck, if you thought this was a good solution, please vote.

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sounds like you have the wrong monitor drivers installed,  download updated monitor drivers from the manufacturer's website,

also check your display settings,  as something is really wrong there.

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