My iMac won't start up after a storm...

Unplug the power cord from the computer and then press and hold the power button for 15+ seconds with the power cord unplugged . Then plug the cord back in and press and hold the power button for about ten seconds or until you hear the startup sound (POST)

I hope this helps!

If this doesn't correct the issue I would reset the PRAM.

Press and hold command, option, p, and r and don't let go until you hear the startup sound three times (POST)

If this doesn't work shut down the computer and start it up holding the option key to see if your hard drive shows up on the screen.

If the disk shows up that's a very good sign , from here slide in the system disk that came with the computer and attempt to verify/repair the drive using the disk utility feature on the disk

I hope this helps!

Confused: you turned the surge protector off and then tried restarting still running through the surge protector, after turning the surge protector back on? Is the protected light, or whatever it's called, still on when you turn on the surge protector? Can you start up if you plug the Mac directly into wall power, not using the surge protector? The surge protector may have been fried.

Generally, unless it's a direct hit, a surge might fry the DSL modem and not go any further. If it was such a powerful hit, then I doubt that running the DSL line through the surge protector would have stopped it, anyway, No surge protector will stop a direct or very close hit, either through the AC or the phone line.

And DSL and phone line surge protection may not play very well together, unless the protector is specifically designed for DSL.

Best during serious lightning is to unplug the phone line from the wall jack and the surge protector powering the computer.

Message was edited by: WZZZ

I think I remember that happening to my iMac G3 (blue) a year later I was trying to get it to work and I found out it was the internal power supply converter thingy. That was I think late 2007 I never fixed it. It is still sitting in my closet.

I TRY ALL THIS (Unplug the power cord from the computer and then press and hold the power button for 15+ seconds with the power cord unplugged . Then plug the cord back in and press and hold the power button for about ten seconds or until you hear the startup sound ) and nothing works. Please I need help.

Don't let any "Computer Repair Place" to work on your computer, ONLY let an Apple Authorized Service Provider do the work, please click AASP Locator to find one in your area.

Always plug the router into a surge protector. There is some power that goes through ethernet cable.

Plug something else in to that outlet to test that it's giving power. Try the Mac in another outlet. Yes, the computer needs to be on to do a PRAM Reset, but I doubt that will solve the problem.

I think you'll have to bring it in to be looked at. It's strange the DSL modem (or printer, for that matter) wasn't wrecked if there was a surge powerful enough to take out the computer.