White screen on my PowerBook G4

D

DIDOGNAWA

Registered
Dear reader;
My laptop displays white screen as soon as it turns on. It behaves normally as it sounds but on the screen, there is only a white and blank. Can someone help me out to solve this issue?
Thank you for your precious help.
 
First of all, I should thank you for ansewring me. Actually, it's not like a Kernel Panic and there no message on the screen at all. I tried to turn it off and restar it by holding the start button for a while to reboot it but it is still the same. The idea of the colors just reversed on the screen may be the raison because it seems and soiuds working right except the screen display, I mean the color which is abviously blank white.
 
You accidently let your fingers do some walking. Just open System Preferences->Universal Access and make sure you didn't take off "Back 0n White" check box.

If you did do the key combination to turn on "White on Black" then go yo System Preferences->Keyboard & Mouse, the "Keyboard Shortcuts" tab and turn the 'Reverse Back & White" off by un-checking it.
 
The problem is I can't get access to anything on the the MAC because I see nothing on the screen as soon as it turns on. No access no message.just a black white screen.
 
The problem is there is no message on the screen, as I mentioned, only a blanck white screen. Concerning the sound, it's normal and no unusual tone.
 
Do you have the original install disks? If you do look for the one that has in small letter "Hardware Tests" (or something along that way) and boot with it (by holding down the "c" button while booting) and test the Mac hardware to seem if something went.
 
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