iMac Blackscreen

fabianschirgi wrote:

Hi everyone,

I got in struggle with my iMac (late 2015). Software = Big Sur. After an Update the iMac turned off and didn't get alive so far. Black screen all the way.

After pressing the start button the fans start to blow, after about 5 seconds it turns off and turns on again.

Now its running endlessly in this state.

I tried to get the RAM in and out, boot with no RAM to try if there is any error screen. No surprise there was nothing.

It would be nice if you have any ideas

Thank you for your help.

Fabian

I used this link - How to repair a Mac disk with Disk Utility - Apple Support which was mentioned in thread posted by @dialabrain.

If you tried the suggestions on that page and they didn't work then Apple Support would be the next stop.

If your Mac starts up to a blank screen - Apple Support

Welcome.

Thanks this worked for me!

irwinnick wrote:

Thanks this worked for me!

You're welcome.