I have a 20" iMac running OS 10.6.8 with a ATI Radeon HD 2600 Pro card, That I rarely shut down completely. For the last year, or so, it has at random times instantly, gone blank in one of several ways. Sometimes it is a simi-blueblack screen with light coming from behind around the edges, and sometimes it's a pinstripe black white image, or even one that is slightly monochromatic. If I restart then the screen returns to normal, and although I would have to say it's happening slightly more frequently, the increase is very slight. If I'm on my screen for mare that a couple hours, the chance that it will happen is pretty good.
My question is, is this the video card going bad? If not what else could it be, and if so, how much will I need to expect to spend to replace it? Is that something I could do myself?
If I have to replace it what card should I use?
My question is, is this the video card going bad? If not what else could it be, and if so, how much will I need to expect to spend to replace it? Is that something I could do myself?
If I have to replace it what card should I use?