Hi, this is Chang.
I recently bought a refurbished powerbook for my second laptop.
The problem is that while I am doing the internet surfing or typing some stuffs, the screen goes to black randomly. Sometimes it happened once a day but now it happened every 10 seconds so basically I can't do anything in this computer.
This is not a screen saver mode and happens both using an adaptor and battery. The screen goes completely black and the backlight goes off. However the computer is still on and running although I can't do anything.
The other thing I want to mention about this one is that the screen sometimes shows the small desktop (in the center there is a desktop and the remaining part of the screen is black) when it goes black and back continuously.. And finally it shows only blue screen and stop going black. However at this time, there is nothing in the desktop and the computer is completely stopped so I need to start again and the screen goes black again.
I have one more powerbook and used it more than 4years without any problem.. However this one I can't figure it out.
I already tried every troubleshooting, such as resetting PRAM, PMU, NVRAM. I also tested using hardware test cd... there is nothing wrong but nothing can resolve my problem..
Could you please give me some advice?
Thanks a lot in advance for your kind help.
I recently bought a refurbished powerbook for my second laptop.
The problem is that while I am doing the internet surfing or typing some stuffs, the screen goes to black randomly. Sometimes it happened once a day but now it happened every 10 seconds so basically I can't do anything in this computer.
This is not a screen saver mode and happens both using an adaptor and battery. The screen goes completely black and the backlight goes off. However the computer is still on and running although I can't do anything.
The other thing I want to mention about this one is that the screen sometimes shows the small desktop (in the center there is a desktop and the remaining part of the screen is black) when it goes black and back continuously.. And finally it shows only blue screen and stop going black. However at this time, there is nothing in the desktop and the computer is completely stopped so I need to start again and the screen goes black again.
I have one more powerbook and used it more than 4years without any problem.. However this one I can't figure it out.
I already tried every troubleshooting, such as resetting PRAM, PMU, NVRAM. I also tested using hardware test cd... there is nothing wrong but nothing can resolve my problem..
Could you please give me some advice?
Thanks a lot in advance for your kind help.
