Earlier this week we had heavy rain storms. One night I woke to a massive rumble of thunder followed by a lightning strike. My Best Buy Geek Squad UPS (uninterruptible power supply) died. I wasn’t sure if it was my UPS or the computer or both. About three and a half hours ago I went and bought an APC UPS at Best Buy. Got it set up & plugged in. Once I hit power button on the new UPS my iMac booted right up! And I am now a happy camper!