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Power light comes on can hear runnig-black screen never boots up

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Remove external devices, remove battery and power, then reposition battery and power and try again. If no go you can try re-seating the memory, disconnect power sources and touch a metal surface to discharge static. You will see panels at the bottom of the unit. The one for the memory is usually the one in the center of the whole unit. This video will show you to remove and reposition memory.


Posted on Mar 26, 2011

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Why isn't it booting?


There are a ton of possible reasons. Some easy troubleshooting steps:
1) Check the power cable. If you can borrow a different power supply, try that.
2) Remove the battery and try it.
3) Hold down the power button for 20 seconds or so.

Beyond that, tell us everything you're seeing and hearing when you try to boot.
1) What indicator lights does your computer have? Which ones light up when you're trying to boot?
2) Is there any change in the screen when you boot. Does it go from a deep "off" black to that slightly lighter "on-but-blank" black?
3) Do you hear any noises? Beeps? Fans? The chatter of a hard disk? The whirr of the CD drive?
4) Does anything appear on the screen? Tell us about any messages that flash up.

Jan 24, 2016 | Computers & Internet

1 Answer

Acer aspire 5515(laptop) screen is black turns on screen stayscompletly black...no acer logo nothing just a black screen. power button comes up green u can hear the fan and harddrive start up


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

Feb 02, 2013 | Acer Aspire 5100-5033 Notebook

1 Answer

Have Gateway M6866 Laptop. Will not boot. when power button is pressed. you hear a fan start power light comes on, harddrive light and a few others comes on for 2 seconds then goes off. screen is always...


If it never posts anything to the screen then more than likely you've got a video card issue. It could be the memory also.

When you plug in the power cord is there any lightswhatsoever on the laptop, where the plug goes in or on the AC Adapter of thepower cord?

When you press the power button do you hear fans running, hard drive spinning,lights on the computer, hear any beeps or lights constantly blinking, hear theDvD/CD drive click and the light on the drawer of the DvD/CD turn on for asecond or two? If so the laptop is trying to boot or may have booted, butthe screen is not showing for some reason.

Beep tones and blinking lights tells the technicians what is going on with thelaptop and why it is not booting. Most times it's a motherboard issuewhen you hear beeps or blinking lights continuous. Most times the problemis with the memory or Video Card. Count the Blinking Lights or Beeps and takenote of their pattern (1 Long or 1 Long followed by 2 Short).

Maybe your power cord is bad if you don't get anything to happen whatsoeverwhen you press the power button. And if that's true maybe you wasoperating off the battery the last time you had it on and since the power cordis bad, it was not charging the battery so the battery is drained and the powercord is bad.

Maybe you have a Static Charge Buildup. Remove the Power Cord, Remove theBattery, then Press and Hold the power button for 30seconds. After 30 seconds plug the power cord back in (leave the batteryout) and hit the power button to see if it boots. If it does, you can putthe battery back in and let it charge.Maybe your DC Power Jack which is where the power cord plugsinto the computer is bad. Take an ink pen and push the tip inside thejack and see if the little pin wiggles, if so the jack is bad. You'll have totake the laptop apart to fix it. Most times it is soldered onto themotherboard, so you will have to desolder the old and solder a new one.Maybe your memory is bad or the memory slot is bad.Remove the Power Cord, Remove the Battery, Remove the cover that houses the memory on the bottom of the laptop then remove one of thememory chips. Set the chip aside then try rebooting the computer. If it boots, then you know the memory chip you set aside is bad so mark an x onit with an ink pen. If it fails to boot then move the chip to the nextmemory slot and try rebooting. If it fails take the chip out and set itaside, then put the other chip in and try booting it in both slots. If itboots, just to verify that the chip set aside is bad, mark an x on it and putit into the open memory chip slot and try booting.

May 24, 2012 | Gateway Computers & Internet

1 Answer

Screen won't come on.


Screen won't come on when? When you first hit the power button to boot it up? Does anything ever post to the screen when you hit the Power Button? Or does it seem like it booted up all the way (you hear the fan running, you hear the hard drive spinning) except the screen is black?

If it seems like it booted up all the way except the screen is black try the steps below.

Shine a flashlight on the dark screen to see if you barely see the icons on the desktop. If so, then the LCD Inverter is bad.

Plug in an external monitor and see if the display shows up on it. It can be any kind of monitor even the old big fat crt monitors as long as it has a vga cable to connect to your computer's vga port. If so that proves your video card is ok. The video will show on most systems when you reboot without you having to do anything. Some systems will require you to hit the FN (Function key) + F1 thru F12. Hold down the FN key then hit the correct key for displaying on the monitor (F1 thru F12). The correct key will normally have CRT/LCD on it or it will have the icon of a display.

If you see no icons by shinning a flash light and the external monitor works, then your screen is bad. If you see no icons by shinning the flash light and nothing shows on the external monitor, then most likely your video card is bad.

If it does not seem like it booted up all the way try the steps below:

When you plug in the power cord is there any lights whatsoever on the laptop, where the plug goes in or on the AC Adapter of the power cord?

When you press the power button do you hear fans running, hard drive spinning, lights on the computer, hear any beeps or lights constantly blinking, hear the DvD/CD drive click and the light on the drawer of the DvD/CD turn on for a second or two? If so the laptop is trying to boot or may have booted, but the screen is not showing for some reason.

Beep tones and blinking lights tells the technicians what is going on with the laptop and why it is not booting. Most times it's a motherboard issue when you hear beeps or blinking lights continuous. Most times the problem is with the memory or Video Card. Count the Blinking Lights or Beeps and take note of their pattern (1 Long or 1 Long followed by 2 Short).

Maybe your power cord is bad if you don't get anything to happen whatsoever when you press the power button. And if that's true maybe you was operating off the battery the last time you had it on and since the power cord is bad, it was not charging the battery so the battery is drained and the power cord is bad.

Maybe you have a Static Charge Buildup. Remove the Power Cord, Remove the Battery, then Press and Hold the power button for 30 seconds. After 30 seconds plug the power cord back in (leave the battery out) and hit the power button to see if it boots. If it does, you can put the battery back in and let it charge.


Maybe your DC Power Jack which is where the power cord plugs into the computer is bad. Take an ink pen and push the tip inside the jack and see if the little pin wiggles, if so the jack is bad. You'll have to take the laptop apart to fix it. Most times it is soldered onto the motherboard, so you will have to desolder the old and solder a new one.


Maybe your memory is bad or the memory slot is bad.

Remove the Power Cord, Remove the Battery, Remove the cover that houses the memory on the bottom of the laptop then remove one of the memory chips. Set the chip aside then try rebooting the computer. If it boots, then you know the memory chip you set aside is bad so mark an x on it with an ink pen. If it fails to boot then move the chip to the next memory slot and try rebooting. If it fails take the chip out and set it aside, then put the other chip in and try booting it in both slots. If it boots, just to verify that the chip set aside is bad, mark an x on it and put it into the open memory chip slot and try booting.

May 23, 2012 | Fujitsu Computers & Internet

1 Answer

Compaq presario 56000cl won't boot up / red light flashing in the back.


When you press the power button do you hear the fan running, hear the disk drive running, see any lights, do you hear the cd drive click once and see the light come on briefly on the cd drive door? If you see all the aforementioned then it is surely trying to boot. Computers don't boot mainly because of the following problems. 1) Bad Power Cord or Power Supply. 2) Electro Static Buildup. 3) Bad Motherboard 4) Bad boot or system files.
Remove the Power Cord and the battery if it's a laptop. Press and Hold the Power Button for 30 Seconds. Then replace only the Power Cord and try hitting the Power Button. If it boots you had an Electro Static Buildup. If you have boot or system files that are missing or corrupt normally the system will be telling you that on an error message that appears on the screen. Does your system show you anything on the screen when you press the Power Button? If not you have a Power Supply or Motherboard issue.

Mar 18, 2012 | Compaq Computers & Internet

1 Answer

Dell studio 1555-power light comes on-can hear runnig-black screen- never boots up


generally if when you turn on the computer and do not see the Dell Logo then about 90% of the time it is caused by a faulty LCD/inverter cable/video card

Try running the PSA diagnostics byt holding down the FN key before turning on the computer. if the computer starts generating a series of beeps it would mean that the LCD is not working and can be caused by a bad LCD or a faulty inverter cable.

Another way to test it would be to connect the computer to an external monitor.

Mar 25, 2011 | Computers & Internet

1 Answer

After powering up the unit, the "Toshiba" logo is very faint and then the screen is black, I hear the unit booting up normally because it is runnig the bootup music for vista. What could be the problem?


Sounds like you backlight might be out. Try attaching a external monitor to it. If that works get back to me and I will try to help you trouble shoot it.
Ron

Mar 12, 2010 | Toshiba Satellite A135-S4427 Notebook

1 Answer

Moitor went black and will not come on at all


This could for many reasons, the main ones are

  • The monitor light is burned and needs to be replaced
  • The video card slot is fried, the card it self
You can try to get a VGA Cable, connect it from your computer to an external screen, press the "Function Key" + "dual screen key" on your keyboard, if u see the screen then its the monitor lights problem.

else, try to change the video card, its slot

Mar 26, 2009 | HP Compaq Presario V2000 Notebook

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