Question about Toshiba Satellite A135-S4527 Notebook

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Display does not function

Power is on and fan is functioning. USB ports have power. CD drive spins. Heat is produced. Monitor is blank. Connect to external monitor is also blank. HD light does not show it being accessed. Caps does not turn on.

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Try to clean its memory card or reseat it. You can use clean soft eraser to clean its edge connector. Do this when you first disconnect battery, off, and no other power source is connected to your unit.

This is the first step, then if still nothing check your hard drive and cdrom reseat if needed.

Posted on Jun 16, 2009

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Toshiba a305 Screen Blank on Power up.


Yes, the first step would be to use an external monitor. You may have to use the FN key with a function key to tell it to use the external monitor. If the external monitor works, try shining a bright flashlight on the display. If you can see images, then the display itself is probably OK and either the back light or inverter are bad.

If the external does not work and shining a light on the display does not show images, then it could be graphics card or main board.

Does the laptop make any noises? e.g. Can you hear fans, hard drive, does the CD light come on during boot up. If yes, to all the above, then the mainboard seems to be OK and it could be graphics or display. If unsure, you can remove the RAM chips and it should beep upon startup to say there is no memory and this is a good indication that the mainboard is functioning somewhat.

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Did the laptop boot up all the way except the screen is blank? Do you hear fans running and the hard drive spinning, lights on? If you think it booted except the screen is blank 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.

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1 Answer

Blank screen


Did it boot all the way? Do you hear the fan running, disk drive spinning? If it sounds like it booted but the display is black, try this:
When you press the power button do you hear fansrunning, hard drive spinning, lights on the computer, hear any beeps or lightsconstantly blinking, hear the DvD/CD drive click and the light on the drawer ofthe DvD/CD turn on for a second or two? If so the laptop is trying toboot 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 thelaptop and why it is not booting. Most times it's a motherboard issuewhen you hear beeps or blinking lights continuous.

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All the lights come on when I switch on my HP Pavillion dv9600 but the screen is blank.


DO THIS FIRST - Perform a hard reset If a PC suddenly fails to boot properly, you should perform a hard reset as the first procedure.
  1. Disconnect all peripheral devices and remove all USB devices and 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 .
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Actions to take after performing hard reset If no error message is displayed:

If a text error message is displayed, see Troubleshooting Error Messages on a Black Screen During Startup or Boot c02076104.jpg

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b52compters@gmail.com
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