MONITOR LIGHT IS FLASHING BUT NOT SHOWING ANYTHING. jUST INSTALLED NEW HARD DRIVE

It is your motherboard or your video card. If you have a VGA cord connect it to your computer and hook it up to your tv or a computer monitor. If something shows up, you need a new video card. If nothing shows up, you need a new mother board or buy a new computer and use the old hard drive as an external hard drive using a hdd to usb cable.

Could be hard drive crash , could be graphics chip failure , could be power supply failure............................

too vague description :

1. does screen show ANYTHING during boot attempt ?
2. can you hear hard drive or heatsink fan spin on boot ?
3. do you get keyboard LED's to light up on boot ?

If NO on 1,2,3, then power supply is toast . get new one........
If No , Yes , Yes , then graphics chip dead . Try external VGA->VGA output to other monitor , see if that works.
If Yes , Yes , Yes , but not booting then hard drive is toast , try replacing it and re-install windows .

check the settings carefully

If it seems like it booted up, you hear fans running, hard drive spinning, lights, (except the display is black) then try the steps below.

For a laptop:

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.

For a Desktop:

Try using another monitor on the computer. Borrow a monitor from a neighbor, friend, relative or co-worker and connect it to the computer. If the Borrowed monitor shows the display then your original monitor is bad. If the Borrowed monitor does not show on the display then you Video Card is bad.

Does it sound like the laptop booted up except the screen is black? Do you hear the fan running and the hard drive spinning? If so try the steps below.
Shine a flashlight on the dark screen to see if you barelysee 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 beany kind of monitor even the old big fat crt monitors as long as it has a vgacable to connect to your computer's vga port. If so that proves yourvideo card is ok. The video will show on most systems when you rebootwithout 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 correctkey for displaying on the monitor (F1 thru F12). The correct key willnormally 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 lightand nothing shows on the external monitor, then most likely your video card isbad.

test all leads that attach to your hard drive including electrical extensions

the leads from your ((motherboard to your hard drive)) Sata make sure they have dust free secure connection and are not faulty or just replace them they could be faulty

make sure all leads that are attached to your drives dvd\cd have secure connections and are not faulty or just replace them they could be faulty ?

even something as small as an electrical extension or a faulty fan lead can cause this problem follow the troubleshooting procedure a computer needs all of the data and electrical current to travel through every working device and to have an end for a computer to be able work properly

make sure your graphics card is securely seated with no dust

if you remove the graphics card to clean the socket replace it

restart the computer the found new hardware wizard should activate

hope this helps you

Since the black screen happens when you turn on the laptop, take a VGA or other input cable that your laptop has a port for and connect to an external monitor that way. If done correctly and the monitor also doesn't display anything, this could mean a problem with the graphics chipset or other hardware. If the problem actually is the bios, then the laptop is bricked, and you should send it in on a warranty if you have one or buy a new laptop.

Sounds like hard drive failure, buy a new hard drive and try to get it started up so you can pull the files off that you need and replace the hard drive and install a new os onto the new hard drive.

Larry,

Try your Fujiplus monitor on another pc see if it still have the same problems. If not, then your Macbook it the caused. You say, you replaced a new hard drive? Did you formatted and reinstalled the Mac software? If not, of course you will got a blue light...cuz the new drive had nothing in it.
Good lucks!

YOU HAVE TO CHANGE POWER SUPLY ( buy new )