MacBook freezes on Blue Screen on startup

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New Orleans
Your Mac's Specs
2007 MacBook OS X 10.5 Leopard, 4 GB RAM, Intel Core 2 Duo
I'm a new convert from windows and this seems like a simple software issue but every now and then when I boot my Mac up it will freeze on a blue screen right before the login. What is the best/easiest way to fix this? TIA
 

chscag

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2017 27" iMac, 10.5" iPad Pro, iPhone 8, iPhone 11, iPhone 12 Mini, Numerous iPods, Monterey
Year, Model, Mac? And which version of OS X is it running?
 
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2007 MacBook OS X 10.5 Leopard, 4 GB RAM, Intel Core 2 Duo
2007 MacBook, Mac OS X 10.5 Leopard
 

chscag

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Do you have your original Leopard install DVD? If you have it, boot the MB with it and enter Disk Utilities from the top menu Utilities. Highlight the hard drive on the left, and run verify and repair from the First Aid tab on the right.

Let's see what it says about the condition of the file system and hard drive.

If that checks out OK, run the Apple Hardware Test.
 
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2007 MacBook OS X 10.5 Leopard, 4 GB RAM, Intel Core 2 Duo
If I dont care about the data and do a clean install of 10.6 Snow Leopard, then to 10.7 Lion would that most like fix this anyways?
 

chscag

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If the hard drive has errors or is not functioning right, installing Snow Leopard and then on to Lion is not going to help. Make sure the hard drive and the machine is OK first. If everything checks out OK, then by all means upgrade to SL and Lion.
 

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