My A1226 is really giving me fits. It will display persistent vertical pink and green pixel column patterns in windows or over the entire screen at start up. I have twice performed the "PRAM Re-set" with Command-Option-P-R depressed with pwer on and that has worked. But tonight it came back and I had to do it a third time. Is this a potential or probable power/battery problem? I hope someone here is familiar with this! Thank you MacForum!!