I have an iMac G5 that I purchased in 2005. Yesterday, I was using Safari and the screen suddenly went white with small, black horizontal lines all over. Fan was pretty loud. I turned it off and turned it back on again with audible chime, but the screen was now black with small white pixels all over... again, fan was really loud. I opened the computer up, dusted it off really well and waited a while before turning it back on. Upon doing so, the startup chime came on, the fan fired up once more, and now the screen was black with different colored moving pixels. The white curser arrow is faintly visible in the middle of all this.
Any idea on what this could be or suggestions on what I should do? I know the computer is older than dirt but it was been so dependable and I love it dearly. Don't want to write it off just yet if there is anything I can do. "Most" of my files are backed up, but I'd love the opportunity to at least turn it back up and back it up once more.