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<blockquote data-quote="Horsa" data-source="post: 1901893" data-attributes="member: 403905">Hello all. In need of some emergency advice here.System as detailed in my side-panel (2008 Mac Pro with 24G Ram, running El Cap)Today I was in the middle of browsing a website when I noticed the GUI had become unresponsive: screen frozen, cursor stuck. I tried unplugging and re-connecting the mouse+keyboard. No change.Then, after a few minutes the case fans went into &quot;jet plane taking off&quot; full-pelt roar, so I held down the power button for an emergency power-down. Unplugged all peripherals, unplugged from the mains LX. Opened the machine and had a feel around. The CPU cooling fins did not seem over-warm. The memory boards were warmish but not excessively so. I took the opportunity to blow out some dust while I had the machine open.Reconnected the mains and pressed the power button. It powered up as normal (no crazy fans) and I heard the boot chime. I held down cmd+R hoping to get into recovery mode...Nothing. Just a plain pale grey screen. No Apple logo or progress bar; no recovery mode console.&nbsp; Eventually, after about 15mins, I gave up: held down the power button to switch it off.I have all my vital stuff backed up by TM on an external HDD, but that's not much use without a working Mac from which to access it. I have no other Mac machines in the house.What do I do now, folks? I do ALL my important work on this machine. I'm stumped...</blockquote>

[QUOTE="Horsa, post: 1901893, member: 403905"] Hello all. In need of some emergency advice here. System as detailed in my side-panel (2008 Mac Pro with 24G Ram, running El Cap) Today I was in the middle of browsing a website when I noticed the GUI had become unresponsive: screen frozen, cursor stuck. I tried unplugging and re-connecting the mouse+keyboard. No change. Then, after a few minutes the case fans went into "jet plane taking off" full-pelt roar, so I held down the power button for an emergency power-down. Unplugged all peripherals, unplugged from the mains LX. Opened the machine and had a feel around. The CPU cooling fins did not seem over-warm. The memory boards were warmish but not excessively so. I took the opportunity to blow out some dust while I had the machine open. Reconnected the mains and pressed the power button. It powered up as normal (no crazy fans) and I heard the boot chime. I held down cmd+R hoping to get into recovery mode... Nothing. Just a plain pale grey screen. No Apple logo or progress bar; no recovery mode console. Eventually, after about 15mins, I gave up: held down the power button to switch it off. I have all my vital stuff backed up by TM on an external HDD, but that's not much use without a working Mac from which to access it. I have no other Mac machines in the house. What do I do now, folks? I do ALL my important work on this machine. I'm stumped... [/QUOTE]

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