my Power book suddenly went to a black screen whilst the computer was still running. To recover the desktop I had to pull the plug and restart.

When restarting it it took forever, the screen was blue for a long time and then after finally logging in it took even longer to open the desktop. It later froze after a few minutes- then came back to life. I tried to shut it down properly, but it goes to grey screen and never switches off.

To use it i have to wiat for ages and then whilst running it doesnt work for long before freezing. To shut down I have to pull the plug and remove battery.

Could anyone offer any advice as to returning it to normal?