Sylvania 780 with windows 7 powers on but won't display

This is more than likely an issue with the monitors themselves. Does this happen on the main monitor is you move the secondary cable over to it? What kind of monitors are you using, how old are they, and do you know the refresh rates on them?

Hi there.

If the screen flickers, make sure the display settings in Windows match the native resolution and refresh rate for the monitor. You can find the native resolution of a flat panel display in the specifications, in the printed material or on the box that came with the monitor. Some common native resolutions are 800 x 600, 1024 x 768, 1920 x 1080, and 1680 x 1050.

The most common refresh rate for LCD monitors is 60 Hz. This normally cannot be changed for flat panel displays using Plug and Play settings. However, if you are using special video software to increase or decrease the refresh rate, change the refresh rate to match the default refresh rate specification of the monitor.

STEP 1
To change the screen resolution and refresh rate settings in Windows, do the following:
- In Windows XP
See my tip on setting up the optimum screen resolution for Windows XP here.

- In Windows Vista (Same for Windows 7)
1. Click Start, and then click Control Panel .
2. Find the Appearance and Personalization area, and click Adjust Screen Resolution .
3. Move the slider bar until the screen resolution matches the native resolution.
4. Click Advanced settings, and then click the Monitor tab.
5. Select the Screen refresh rate that matches the default rate for your monitor (if it is not already selected).
6. Click OK, and then click OK again.

If you cannot select the native resolution or the native resolution is unavailable, continue to the next step to update the drivers for the graphics adapter on the computer.

You can get the latest updated video drivers from the video hardware manufacturer's Web site. Here is a list showing some of the video hardware websites:

Check for NVIDIA video driver updates at NVIDIA Home Page.
Check for ATI/AMD video driver updates at ATI/AMD Home Page.
Check for Intel video support and downloads, Intel Downloads. (If you have an Intel mainboard and are using onboard graphics).

NOTE: If you are using onboard graphics with a mainboard that is not manufactured by Intel, just give me the name and model number of your mainboard and I can try and locate the graphics drivers for you.

After updating the video drivers, go back to Step 1 and try to change the screen resolution again.
Note: If you cannot select the native resolution after updating the video drivers, the graphics adapter in the computer might not support that resolution and may need to be upgraded.

If after changing the resolution and updating video drivers the flickering persists then check the video cable connections. Unplug the cable and inspect the cable for damage. If the cable is damaged, replace it with a new cable. Try to use cables less than 3 meters (10 feet) long.

Monitors are sensitive to magnetic fields so have a look at the environment around the monitor. Speakers, florescent lights, fans, cell phones, radios, and any other electrical device can cause flickering. Temporarily move electrical items away from the monitor to see if they is producing a field that causes the flicker.

If the monitor has more than one type of connection available such as VGA, DVI, or HDMI, try a different type of connection.

To see if the video coming from the computer is causing the problem, temporarily connect the monitor to another computer. If the flicker is gone when the monitor is connected to another computer, then this means that the graphics adapter hardware on the first computer is damaged or might need to be upgraded to use the monitor. On the bright side at least it's not your monitor.

If however the flicker remains then the problem lies within the hardware of the monitor itself and is not a software problem. If you have bought this monitor fairly recently then I suggest you take it back to the place of purchase and have them test it. Some monitors carry 3 year warranty support so if you bought it within the warranty period specified by the reseller I suggest you see if you can get refunded or have them swop it out.

~Slasher_X

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. Thanks

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

It is possible that you've got the resolution and vertical refresh rate set too high. CRTs tend to flicker if the vertical refresh rate is not set to about 72 to 75 Hz. If your screen resolution it set fairly high compared to what the monitor was designed to display it can overtax the video sweep circuitry in the monitor. If possible check the manufacturer's specs.

Often the video driver will let you specify different resolutions for primary and secondary monitor. If you can't find the manufacturer's specs it would be prudent to pick a less demanding resolution or vertical refresh rate for the secondary monitor.

First, try setting your monitor refresh rate at 60Hz using a known-working monitor. (The VGA input of the Beovision 7 is recommended for 60Hz refresh rate). If this fails to produce output from the Beovision 7, it is very likely, your video driver's resolution is set too high for the Beovision 7 to display signal. If you are using the Beovision 7 as your primary monitor, first connect a known-working monitor to the computer and reduce the resolution to 1024x768. Once you have changed the resolution, try connecting the Beovision 7. If you get video signal, increase the resolution incrementally until you find the maximum resolution the Beovision 7 will handle.

IF YOU ARE USING THE BEOVISION 7 AS A SECONDARY MONITOR USING EXTENDED DESKTOP, reduce the resolution on Monitor 2 output to 1024x768. If video appears on the Beovision 7 at that resolution, incrementally increase the Monitor 2 resolution until you find the maximum resolution the Beovision 7 will accept as a secondary monitor.

Good morning, afternoon, evening or night; whatever time of day you are viewing this solution post. Thank you for choosing FixYa to answer and solve your problem. Your Compaq MV520 Monitor is always blinking every time you turn on your computer and you want to know how you can fix it? First, we need to troubleshoot the problem. I'm thinking you probably need to refresh the flicker rate on your monitor. The flicker rate is probably set on a low setting, which is causing you screen to blink (flicker). This can be bad for your health as well because it can cause eyestrain and headaches. Your monitor is a CRT (Cathode-Ray Tube) model. These types of monitors can cause a lot of screen flickering. Now that we've troubleshooted the problem, now it's time to solve the problem. There are two ways you can solve this problem. You can either refresh the flicker rate or you can buy an LCD monitor. LCD monitors flicker-free. My suggestion is that you refresh the screen flicker rate. To refresh the flicker rate, go into your System Preferences or Control Panel, click your operating system's appearance and display link and click your screen adjustment link. You may have to click your advanced settings link. Click your monitor tab and from there adjust you screen refresh rate. You may have to adjust your screen resolution before you refresh the screen rate. If you have to do this, make sure the screen resolution you choose supports you monitor's height and width as well as visibility. The higher the resolution, the higher the screen rate. The instructions I'm giving you may sound like this because I'm not sure what your operating system is. I'm not to familiar with Mac Operating Systems, but if you have a Windows Operating System and you need better detailed instructions, just reply back. I hope this decreases your screen flickering and gives you a better viewing experience.

hi you could alter the resolution for the projector and see how that goes

Flickering may b due 2 ur Display configurations so u may also use some Display software or u may manually correct it.

Properties>Settings>

1. adjust ur screen resolution

Change the refresh frequency for your monitor To change the refresh frequency for your monitor

1. Open Display in Control Panel.
2. On the Settings tab, click Advanced.
3. On the Monitor tab, in the Refresh Frequency list, click a new refresh rate.

Notes

• To open Display, click Start, point to Settings, click Control Panel, and then double-click Display.
• The default refresh frequency setting is 100 Hertz, although your monitor may support a higher setting. Check your manufacturer's documentation for information regarding the settings your monitor supports.
• A higher refresh frequency reduces any flicker on your screen, but choosing a setting that is too high for your monitor can make your display unusable and cause damage to your hardware.
• Changes to the refresh frequency affect all users that log on to the computer.