Read this tip to make your life smarter, better, faster and wiser. LifeTips is the place to go when you need to know about Troubleshooting and other Macintosh topics.

Where do I start troubleshooting when my Mac freezes on startup?

Boot Crash After OS Upgrade

Regardless of your physical RAM, only a limited amount of RAM is available during the early stages of boothing up; apparently only about 4MB. Occasional conflicts with some PCI cards have been reported, particularly on older systems. Unfortunately this problem does not appear to have been addressed by Apple, and occasionally an upgrade to a newer OS will suddenly cause your machine to refuse to boot up. If you experience a problem booting with a new OS, and have several PCI cards plugged in to slots on your machine, you may have to learn to live without one to use your new system!

Comments

Nobody has commented on this tip yet. Be the first.

Ask a Question

Not finding the advice and tips you need on this Macintosh Tip Site? Request a Tip Now!

Guru Spotlight

Jerry Mayo

Ever wonder how you could make your life better and more fun? So have tens of millions of fans who have turned to LifeTips for answers over the past decade. We keep the tips, advice, books, podcasts and writing services flowing, so you can keep your life and business growing in the right direction. Upward!