On Nov 18, 2011, at 10:23 PM, Maccountant wrote:
I have no problem starting in Safe Boot mode, even when it cannot
start - due to freezing - in normal mode.
Any suggestions?
You've booted a CD or DVD and run Disk Utility on the HDs? If the CD
or DVD freezes, it's likely hardware, but I don't think it will freeze.
This sounds like a software issue. You've changed CPUs, video cards,
HDs, and RAM, and STILL have this problem that only occurs in "normal"
boots and not in "safe" boots. This would indicate the problem is
software, and some 3rd-party software most likely.
You might be able to systematically troubleshoot the problem by
creating a list of which processes are running during a Safe Boot, and
then compare that to which are running during a normal boot. You can
see the individual processes in Applications>Utilities>Activity
Monitor. You can "Quit" processes manually from Activity Monitor, and
perhaps isolate which process is causing the freeze.
If I were to guess, I'd guess printer software. I know HP printer
software was known to have daemons that caused problems sometimes, and
I imagine other printer software may be nearly as bad. I think it's
more of a USB issue, but printer software is polling the USB bus, and
I suspect that's where the problem lies. If not printer software, if
you have any other 3rd-party USB software, start there.
I could possibly take longer than it's worth to isolate the issue
compared to doing a fresh, clean installation of 10.4.11 and
transferring your stuff across to a pristine System. I assume a
pristine System will work normally.
I'd reinstall your better CPU and video card also, assuming this is a
software issue.
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