I try to turn my Compaq laptop on, I press the start button, the Compaq logo appears in the start up cycle on the screen, but then the screen goes black and appears to have no power to it. I checked to make sure the laptop is plugged in from a good power sourse, the battery isn't completely drained, (I already checked) and I have also tried completely draining the laptop of power. I can start the laptop in safe mode but when I try to restart it from there to get to the normal mode the screen goes black again and nothing appears no matter what I do. I have tried removing the battery, and starting the computer without it in as well. In the past I had a problem similar to this where the screen would not power up after the laptop had gone into sleep mode, I reseated the RAM and even took the laptop into a service center and it appeared the problem was fixed, so I don't know if this problem is related or not but I have no idea how to proceed. Please help.
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Re: Laptop won't start up
It sounds like your laptop is using it's external VGA adapter for its main display. Try holding down the Function (FN) on your keyboard located on the bottom left hand side and pressing F4 at the same time.
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Hit escape as you turn on the pc. Continue hitting the button until the startup screen shows. Also Try Hitting Contol alt delete all at once and hold down until startup screen shows. Be sure you have absolutley no usb ports being used during startup
do you still see the compaq logo and does it show you the windows boot up screen before it goes blank?
do you see anything on the screen at all after pressing the power button?
Check if the laptop is receiving power. If it has power and you can't see anything on the screen it could mean that the LCD assembly or the Video card of your laptop is bad.
If it goes to the compaq screen and then to windows logo before going out, try booting into safe mode and once there uninstall the video driver from the device manager because that means the resolution was set to something higher than the display could handle.
If it restarts after showing the compaq screen try reseating the memory, hard drive and wireless card of your computer put them one by one and try turning the compter on after each part you put back to check which component is point of failure.
Otherwise you have a bad motherboard and it may have to be replaced.
Hope this helps!
It appears your laptop is booting up but the screen is black. the problem most likely a back light problem. this could be caused by a faulty inverter or a faulty CCFL lamp. Please click on this link and follow my instruction to determine the fault and fix :- http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen
this is often related to a possible motherboard problem. Try these steps: turn it off, remove the battery, and AC adapter, then press and hold the power button for about 5 to 10 seconds. Once done, reconnect at least the adapter , turn on the laptop and as soon as the Dell logo shows up, tap F2 a few times to enter System Setup (BIOS screen). From there, go to the Maintenance category, and select Load Defaults, press Enter. Press ESC, then select Save/Exit, restart the computer and see how it goes.
Here are recovery instructions for HP/Compaq laptops.
1. Reboot, and repeatedly press F10 at the HP logo until the recovery screen appears. 2. When the recovery screen appears, press "Next" and then "Yes" to perform a non-destructive recovery. 3. To perform a destructive recovery, click "Advanced" and then "Yes". 4. After the recovery is finished, the laptop will reboot.
u just try for the buttons in the down of ur pc or may be at the sides..............just press it an enter the menu for adjustments...........there will be an option called DEGUASS just press it once.......ur pc's screen will shake for a while and then stops.........then u will get an clear display.or press F8 and change the settings.
it sounds possibly that it is going into hibernation. a single press of the power button should bring it back alive.
also feel the bottom of the laptop.... if it is getting close to meltdown you need to clean the dust and dirt from the heatsinks. the fan area may appear to be clear but all the junk gets blown against copper heat sinks so you need to remove the covers to get at it.
Since you cant get anywhere from the compaq logo.. well try to press TAB button in the startup, try a few times (start it again if you dont get anything)
You should get the diagnostic screen.
If the bios needs to be flashed .. then the chip needs to be removed from the motherboard, difficult operation contact a local pc shop for help if you are not experienced in takeing laptops apart and useing a soldering iron the remove the bios chip from the motherboard and then flashing it in another pc motherboard.. well difficult it is.