browser
I have chrome firefox and safari on my Mac and today it is crashing to a black screen is this too many browsers?? which is best?? If delete one what happens??
iMac
Hi, I doubt it's too many browsers, are you running both at once? I think Firefox is best.
What all 3rd party extensions are you running?
EtreCheck is a simple little app to display the important details of your system configuration and allow you to copy that information to the Clipboard. It is meant to be used with Apple Support Communities to help people help you with your Mac.
http://www.etresoft.com/etrecheck
Open Console in Utilities & see if there are any clues or repeating messages when this happens.