No display after reboot windows
If it seems like your system is running whereas you hear fans running, hear the hard drive running, see lights, heard the hard drive click during bootup, but there is nothing on the lcd screen then try the following:
1) Try hooking a external monitor to your laptop. It can be any type of monitor even one of the old style fat crt monitors as long as it has a vga cable to connect to the laptop. There is a sequence of keys you might have to hit to get the display to show on the external. Most times you hit the FN (Function key) and hold it while you hit the corresponding F1 thru F12 key that is for display. Usually the correct key will say CRT/LCD or it might have a display icon on it. If the image displays on the external monitor that means the video card is good.
2). Remove the external monitor and reboot the computer again. Now when it is done booting take a flashlight an shine it on the lcd screen. You are looking to see if you can faintly see the icons on the screen. If they are there but barely visible then the LCD Inverter is bad. The LCD Inverter is located at the bottom of the lcd screen just above the keyboard and the Strip around the lcd screen covers it. You'll have to take the lcd apart to get to it.
3) If you don't see anything when you shine a flashlight on the desktop, then the lcd screen has to be replaced. However, sometimes the cable on the back of the lcd screen has come aloose or just needs reseating, so unplug the cable and put it back then see if it shows an image.
Read Below if it is not booting at all when you press the power button.
Laptops don't boot for the following reasons: 1) Bad Power Cord. 2) Bad
DC Power Jack where the power cord plugs into the laptop. 3) Static
Charge Buildup. 4) Bad Motherboard.
The above 4 reasons are when
you press the power button and absolutely nothing happens. You hear no
fans running, no disk drive running, no one time clicking sound on the
CD Drive and No light for a second or two when the CD drives click. In
the case of a motherboard issue sometimes you will hear beep sounds or
see blinking lights. Those beep sounds and blinking lights tells the
technician what is going on with your motherboard and why it will not
boot. If you see the blinking lights or hear beeps count them.
So you have a power light which means your power cord and
dc power jack is good. So lets see if you have a static charge buildup.
the Power Cord and the Battery from the laptop, then Press and Hold the
Power Button for 30 seconds. After 30 seconds put the power cord back
into the laptop, but leave the battery out. Press the power button to
see if it boots. If it does you had a Static Charge Buildup and it's ok
to put your battery back in. If it does not you more than likely have
an issue with your motherboard.
Mar 23, 2012 |
Computers & Internet