White flashing light on my Tower in early 2008

Hi people,

I have a Mac Pro 2008 beginning 2.8 Mavericks 10.9.5 running 2xquald.  Since the update about a month ago my Mac is acting strange.  During the race, fans will ramp up to maximum and keep doing this until I hold the power button to turn off.  After a reboot, things return to normal.  The my screen started to freeze, and other times the Mac will only die and restart itself.  More recently, the screen froze and fans exploded, so I held the power button until it turns off, but when you restart, I had a power light flashes and it wouldn't restart.  I tried to wait a few minutes and after several attempts, restart got the same results.  Then I unplugged all devices and it restarted.  I have shut down once again, plugged in, and it restarted correctly.  Is an OS problem or a hardware problem?  Thank you!

Please after the release of EtreCheck

<https://discussions.apple.com/docs/DOC-6174>

<http://etrecheck.com>

It is possible that you have some installed 3rd party additions that don't play nice with the Mavericks.  This happens often.

You can also try to start in safe mode

<http://support.apple.com/kb/ht1564>

It's just an experiment, but it won't load 3 additions of party, and if things are more stable in safe mode is a very strong indication that the 3rd party software is the first cause.

Tags: Mac OS & System Software

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