Problems when starting up my Mac Pro

Hi all,
When I start up my Mac Pro (2.66) it the light on the mac will turn on but there is no chime, no display. The second time I start up the Mac it chimes and the display runs up to the grey screen but then it pauses and a fan (don't know which one) goes mad. The third time I start up my mac it works. What can I do to avoid this process, so far I have reset the PRAM and the SMU - (by removing the wires and putting them back) please help!! - I really don't want to re-install everything!!!!!

Try the small round SMC button (remove drive tray #4 on the back to get to it). Use a non-conductive implement and hold in for 5 seconds. That does a better job than just unplugging or zapping PRAM.
Check what you have on the same circuit. The Mac Pro is sensitive to other equipment on same circuit or nearby. Consider getting a 1300VA UPS even.
You should have an alternate, emergency, boot drive or at the least clone or working bootable backup. And consider Disk Warrior 4.1 to repair your drives.
Try to isolate what other cables and equipment is attached as possible cause.

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    This may help.
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    pull your drives
    Reset SMC
    http://www.apple.com/support/macpro
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    hardware error - RAM, bad sectors, power supply, wall current (no electric heater on same circuit), bad USB cables etc etc
    software - harder to say but corrupt files, drivers, cache, fonts, or corrupt cache files and folders
    .... and that isn't a list but in general, there are faq for kernel panics, their cause and trial and error to resolve
    depending on when and what OS it came with and any graphic card changes the OEM DVD may not work but 10.6.3 DVD would. But best is to already have bootable backups and emergency boot drive or partition.
    Don't just keep working even if you think you must or safe to - take some action and help prevent it from happening again and picking up the pieces too.
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    Please ، How Email  for a company ? I want to communicate with them about my problem "(

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  • When switching on my Mac Pro on bootup it keep shutting down then eventually it works fine

    When switching on my Mac Pro on bootup it keep shutting down then eventually it works fine

    I also have the exact same problem with my early 2008 Mac Pro.  Last spring, the video card that came with the unit burned out.  I brought it in to the Apple Store in my area, but they were unable to really help me out.  I ended up replacing the card, but about two or three weeks ago I started having the same exact issue that you do - the Mac would suddenly die occasionally, and then would take quite a few tries to come back up.  It seems that resetting the PRAM helps temporarily with me.  It has been up since about 3 PM so far, and it is behaving.
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    Hi everybody out there using Mac Pro's early 2008,
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    Cheers, Kavango

    go to a black screen after 15 minutes or a couple hours
    That is probably an indication that you need to find a new graphics card.
    RE: Mac Pro Replacement Graphics cards
    1) Apple brand cards,
    2) "sold in the Apple store" cards, and
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    ... show all the screens, including Boot up screens, Safe Mode, Installer, Recovery, debug screens, and Alt/Option boot screens. At this writing, these choices include:
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    • Apple-firmware 5770, about US$250** works near full speed in every model Mac Pro, Drivers in 10.6.5
    • Apple-firmware 5870, about US$450
    2) "sold in the Apple store" cards
    • NVIDIA Quadro 4000, about US$1200
    • NVIDIA Quadro 5000, about US$2500
    3) "Mac Edition" cards -- REQUIRE 10.8.3 or later:
    • SAPPHIRE HD 7950 3GB GDDR5 MAC Edition, about US$480** Vendor recommends Mac Pro 4,1
    • EVGA GTX 680 Mac Edition, about US$600
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    If you are Meet ALL of these:
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  • Problem on my early 2008 Mac Pro

    I had this problem with my early 2008 Mac Pro which started last week.
    Some background; I'm using 8GB RAMs, using Snow Leopard and bootcamp Windows 7 and 3 days before the start of the problem, I had replaced the original 320GB HDD for 640GB HDD and reinstalled both OSes.
    While I was playing some videos in Windows 7 last week, it displayed the blue screen with memory dump message and restarted on its own. Thereafter, I was unable to load Windows 7 and SL respectively, both hung before they can be loaded. In SL, I noticed that there were some faint red dots in the Apple logo and subsequently, the entire screen started to flicker with some random black and white strips. In Windows 7, it frozen at the Windows logo with a 640x480 resolution. My default resolution was 1920x1200. However, I managed to loaded into the safe mode of Windows and extracted my work.
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    I would have kept the 320GB while using Windows WD Lifeguard to test, zero, run extended tests and slow long format of the new WD 640. Then just cloned system to new drive.
    Casper 6.0 seems to be great utility if you want to avoid reinstalling 7, though I've found 7 to be fast and easy to install even with dozens of programs to add.
    Are you using the current / latest graphic driver for 7? I don't notice you even list which card.
    RAM - there is no perfect test, AHT finds some while Memtest takes time and may find others.
    Windows may be more sensitive to weak hard drive sectors and memory than Mac OS or than HFS+.
    Do you have any 3rd party devices? PCIe? Cables etc?
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    hi
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  • Even when I charge my Mac Pro to the full bar, the battery seems to be drained even when I am not using it. Example, after charging it full, i switched it on the next day and its 79% battery left. Is there something wrong? help please

    Even when I charge my Mac Pro to the full bar, the battery seems to be drained even when I am not using it. Example, after charging it full, i switched it on the next day and its 79% battery left. Is there something wrong? help please

    Assuming you are disconnecting from line power, when you say switched on, do you mean it was shutdown or in sleep mode?  If sleep mode the battery will still drain because sleep still keeps some things active and the battery does drain a little.  However, to go from 100% to 79% charge overnight is a bit excessive in sleep mode.  Unless you have some processes set to activate over night by the cron file and do things like backup the system.
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