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The computer turns on with both AC power and battery pack, windows boots up, but there is nothing on the screen, only vertical lines. There has never been any physical abuse to the computer ie. dropped.

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Check the Video Cable and make sure it isn't somehow dislodged from the monitor or the Video Card. You can also make sure the video card is seated well in the motherboard. Sometimes when a cord is bumped it can move the video card just enough to keep it from getting a good signal.
If you see the boot process on the screen then the problem isn't the monitor or the video card ... its in windows!
If that is the case try booting to safe mode as it only uses the VGA settings and not all the windows drivers. If you get a good picture there, then run the system restore or an antiviruse program in safe mode!

Posted on Jul 19, 2008

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Black screen blinking line in upper left corner


you just need to re-install the Operating System from recovery cd

Dec 19, 2012 | Dell Dimension 8250 PC Desktop

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Computer will not boot to normal and verticle lines on monitor, dell XPS410, windows vista 32 bit


Unplug the monitor video cable from the computer. Power on the monitor and see if you get the same results. If so then your monitor is defective.

Oct 11, 2012 | Dell PC Desktops

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3 beep sound


If a PC suddenly fails to boot properly, you should perform a hard reset as the first action. Performing the hard reset will correct many problems. If the computer still does not start properly, select your symptom from the list below to guide you to the recommended corrective actions.
  1. Disconnect all peripheral devices and remove all USB devices and SD media cards. You want to test the computer not the accessories!
  2. Disconnect the AC power adapter, remove the battery, and then press and hold the power button for at least 15 seconds to drain all residual power and restore default startup settings.
  3. Reconnect the AC power adapter (but do not insert the battery), Press the Power button, Look for glowing LEDs near caps lock and num lock keys, and Listen for sounds of a fan or other moving parts turning.
  4. If the computer does not start, the LED lights do not glow, and the display is black, you can perform one or more of the following actions to resolve the no power issue.
    • Verify the computer is receiving power from the AC adapter . Verify that the AC adapter is not damaged and is connected correctly to a working wall outlet plug. Verify AC power is connected to the system board by examining the AC adapter, wiring, and pin connection for damage. The keyboard LEDs will glow when AC power is connected to the system board. Damaged components, like the AC adapter or the pin in the power connector, may require an HP-certified repair.
    • Use a different AC power adapter . If you have access to a different AC adapter or power pack that is designed for the computer, connect it to the notebook and try to start the computer. If you own or have access to more than one notebook, verify that you are using the adapter which belongs to the notebook. CAUTION: Using a power adapter that does not meet the power requirements or has the wrong type of connector may damage the computer. On newer notebook models, connecting the wrong adapter to the notebook may cause the power LED lights to blink but not power the computer.
    • Remove the battery and boot on AC power only . A discharged or defective battery may prevent the AC adapter from supplying enough power to start the computer. To verify that power from the AC adapter is available for PC; remove the battery, connect AC power adapter, and press power button. If available, try using a different AC adapter, that is rated for the PC, and repeat this test.
    • Remove the AC adapter and boot on battery power only . A defective AC adapter may not charge the battery and prevent the computer from booting on battery power only. To verify battery power available for the PC; connect AC power adapter, allow battery to charge for 30 minutes or more, disconnect the power adapter and press power button. If available, try using a fully charged battery, of the same type, from another computer and repeat this test.
      • If LEDS do not glow and the fan or hard drive do not spin, battery may need to be replaced.
      • If tests of both the battery and the AC adapter fail, there may be a problem with system board requiring service by HP.
      • If LEDs glow and PC boots, the AC adapter may need to be replaced.
      • If LEDs glow, but PC does not boot go to LEDs glow, fan is heard, but display is black or blank section.

Nov 21, 2010 | HP Compaq d530c PC Desktop

1 Answer

HELP! MY SCREEN IS TOTALLY BLANK, BLACK. WHEN I TURN IT ON, THE INTERNET LIGHT ON BOTTOM RIGHT COMES ON, BUT NOTHING ELSE. IT IS CURRENTLY ON CHARGE. I HAVE TAKEN OUT THE BATTERY AND PUT IT BACK. THAT...


Disconnect the ac adapter and take out the battery. Next press the power button and hold it for 20 seconds. Then, connect the ac adapter and attempt to turn it on.

If it turns on, reinstall your battery and try again. If it does not turn when you reinstall the battery then it's your battery.

If it does not turn on without the battery, then it's either your ac adapter or your dc jack. You can check the ac adapter at a local pc shop or electronics store. If it's the dc jack then you have the option of ordering it on-line and replacing it yourself or have someone else do it. Good luck and let me know how it went.

Sep 23, 2010 | Everex PC Desktops

1 Answer

Black vertical lines & looks like safe mode when XP is loading


ur video card heats to much, so check if the fan in ur video card is working, if ur video card didn't have a fan try to install one

May 26, 2009 | Dell Dimension 4600 PC Desktop

1 Answer

Desktop doesn't come up. i get vertical lines instead


try removing the bios battery for couple of mins and then replacing it :)

Apr 23, 2009 | PC Desktops

1 Answer

After downloading windows xp service pack 3: screen turned black boot failure/won't bootup without CD old files missing screen flickers hardware missing


you will have to restor it to factory stetings there is nothing else i can think that you would be able to do

please rate my help to you
thank you.

Apr 22, 2009 | PC Desktops

1 Answer

Immediately upon boot, vertical lines appear on screen. After several minutes the screen turns pick and the windows cursor appears. there is no further change in the display. Mouse appears to work. Not...


My first check would be video drivers if this is a newly built computer. If it is a computer that has been running a while and the problem suddenly appeared I would reseat the RAM and attempt to boot into safe mode, suspecting a virus infection.

Mar 01, 2009 | HP PC Desktops

1 Answer

Most times on startup the screen remains white although if i leave it on i can hear windows logon sound but cant see it. other times if it manages to boot up when the windows black initialising screen...


reet your display properties to defaults.
g o to my computer proeprties then advsnced and then enable the otiojn button besr performance.

Nov 09, 2008 | PC Desktops

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