Specs: Mid-2007 15" MacBook Pro "Santa Rosa" 2.2Ghtz I'm experiencing a major issue which leads me to believe my computer has bit the dust. Last night, I was using my computer on battery power; it had about an 80% charge on it. Suddenly it just shut off with no warning. Pressing the power button did nothing; no response whatsoever. So I plugged it in and it got caught in a boot loop. After removing the battery, it was able to boot. I put the battery back in to see what the computer said about it; "Not Charging". So I ordered a new battery. Though this morning, it won't run on just AC power and no battery installed. The battery has to be in, but even then it can't get 5 seconds into the boot process without rebooting. I've reset SMC, PMU, and PRAM. Booting into Safe Mode or Boot Camp doesn't work, just reboots after about five seconds. List of lifetime repairs: - Logic Board replacement, 2009 - Battery replaced now five times - Webcam replacement - (not fixed) Optical drive failure - Harddrive Any thoughts? Has it finally had it?