Why does my mac pro hang when restarted?

If I go to restart or shutdown my Mac Pro Intel, it starts to restart then the screen stays grey with only a dial showing spinng around (not the beachball just a lined circle that rotates) and there isnt the Apple Logo either just a grey screen. I have to hold down power button to get it to restart. I have 12gigs of memory in it. Its a dual core Intel Xeon running Lion OSX 10.7.2. Is there a program that I could run to find out why it does this? I am fairly new to Mac.

Hello, I am facing a similar issue. Did you happen to find a solution?

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Why does my Mac Pro like to restart itself when I opened multiple apps?

I have a 2012 Mac Pro with OSX 10.8.4 and ever snice I brought this laptop it has been restarting itself. Does anyone have any idea why it like to this? It's getting annoying.
Thank you!

SivilayMN wrote:
I have a 2012 Mac Pro with OSX 10.8.4 and ever snice I brought this laptop it has been restarting itself. Does anyone have any idea why it like to this? It's getting annoying.
Thank you!
You are still under warranty. Call Apple Care. Make sure you get a case number as all repairs have an additional 90 days of warranty.
#1 - You have 14 days from the date of purchase to return your computer with no questions asked.
#2 - You have 90 days of FREE phone tech support.
#3 - You have the standard one year Apple warranty.
#4 - If you've purchased an AppleCare Protection Plan, your warranty last for 3 years. You can obtain AppleCare anytime up to the first year of the purchase of your computer.
Take FULL advantage of your warranty. Posting on a message board should be done as a last resort and if you are out of warranty or Apple Care has expired.
Mac Pro

Why does my mac pro slow right down when its on battery ???

Why does my mac pro slow right down when its on battery....... cant watch dvds as they keep jumping, internet slows down as does everything, then i run it off the mains and its all fine again, so my mac book pro has not become very portable, please help

Yo , yeah its a mac book pro, noly got it about 6 months ago, not sure if it has a removable battery, it all looks completely sealed, this is what it said in the battery menu:
Model Information:
Serial Number:          W01264M3HD3BA
Manufacturer:          SMP
Device Name:          bq20z451
Pack Lot Code:          0000
PCB Lot Code:          0000
Firmware Version:          0201
Hardware Revision:          000a
Cell Revision:          0158
Charge Information:
Charge Remaining (mAh):          5021
Fully Charged:          No
Charging:          No
Full Charge Capacity (mAh):          5923
Health Information:
Cycle Count:          49
Condition:          Normal
Battery Installed:          Yes
Amperage (mA):          -958
Voltage (mV):          11946
System Power Settings:
AC Power:
System Sleep Timer (Minutes):          10
Disk Sleep Timer (Minutes):          10
Display Sleep Timer (Minutes):          10
Wake on AC Change:          No
Wake on Clamshell Open:          Yes
Wake on LAN:          Yes
Display Sleep Uses Dim:          Yes
Battery Power:
System Sleep Timer (Minutes):          10
Disk Sleep Timer (Minutes):          10
Display Sleep Timer (Minutes):          2
Wake on AC Change:          No
Wake on Clamshell Open:          Yes
Current Power Source:          Yes
Display Sleep Uses Dim:          Yes
Reduce Brightness:          Yes
Hardware Configuration:
UPS Installed:          No
AC Charger Information:
Connected:          No
Charging:          No
Hope you can help, its reallly quite annoying considering its quite new.
Cheers

Why does my Mac Pro open to a fuzzy screen when coming out of sleep mode?

Why does my Mac Pro open to a static-filled screen when coming out of sleep mode?

But does it then come fully awake? My MB Pro comes on with out of focus screen as if in a fog but once it comes awake it clears up, there is a progress bar at the bottom showing the progress from sleep

Why does my mac pro gets extremly hot about 20 min or so that im on and freezes about a 1 hour that im on then i have to power off etc can u help me pls

why does my mac pro gets extrwhy does my mac pro gets extremly hot about 20 min or so that im on and freezes about a 1 hour that im on then i have to power off etc can u help me pls

You can find out what processes are loading your system by running Application Monitor (in Launchpad > Utilities if you're running Lion or Launchpad > Other under Mountain Lion). Select "All Processes". Sort the display by CPU% (click on the label of that column). What processes show over 10% CPU?
Also, when you click on the CPU button on the lower bar, what shows as your % idle? (Mine is showing about 98% just reading and posting here.)
If no process is causing the heat, you could have a hardware problem.

Why does my mac pro freeze on start up ?

Why does my mac pro freeze on start up ? Some times this three or four times before i can get it to start correctly.

Model Name:          Mac Pro
Model Identifier:          MacPro4,1
Processor Name:          Quad-Core Intel Xeon
Processor Speed:          2.26 GHz
Number Of Processors:          2
Total Number Of Cores:          8
L2 Cache (per core):          256 KB
L3 Cache (per processor):          8 MB
Memory:          6 GB
Processor Interconnect Speed:          5.86 GT/s
Boot ROM Version:          MP41.0081.B07
SMC Version (system):          1.39f5
SMC Version (processor tray):          1.39f5
Sorry i am new to mac & communities , when you say repair the drives and clone the system what do you mean ?

Why does my Mac Pro turn completely off while in the sleep mode?

Why does my Mac Pro turn off completley overnight when I had placed it in the sleep mode?

A power fluctuation may also shut your computer off from sleep mode.
Is there anything in the System Log overnight?
Here is a related article:
About diagnostic and usage data in OS X Lion and Mountain Lion

Why does my Mac Pro try to start up from a blank drive?

I fitted a 2nd drive to my 2006 Mac Pro in anticipation of dual booting Windows (not done yet). The dive is FAT formatted but is empty. Why does the Mac Pro try to boot up from that drive every time I start it up, despite having set the startup disc as OS X in the System Prefs?! Getting sick of seeing the flashing folder with the question mark evry time I start it up.

I might be inclined to think the problem is really on your startup drive. You might try reinstalling Snow Leopard.
Also, try:
Resetting your Mac's PRAM and NVRAM
Reinstall OS X without erasing the drive
Do the following:
1. Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
2. Reinstall Snow Leopard
If the drive is OK then quit DU and return to the installer. Proceed with reinstalling OS X. Note that the Snow Leopard installer will not erase your drive or disturb your files. After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.
Download and install the Combo Updater for the version you prefer from support.apple.com/downloads/.

HT6099 why does the mac pro (late 2013) only support up to 60Hz at 1080p? TV screens are pretty much all 120Hz. So much for future proof.

why does the mac pro (late 2013) only support up to 60Hz at 1080p? TV screens are pretty much all >120Hz. So much for future proof.

http://en.wikipedia.org/wiki/4K_resolution
http://en.wikipedia.org/wiki/4K_UHD
http://www.techradar.com/news/home-cinema/high-definition/4k-tv-resolution-what- you-need-to-know-1048954
Need More Pixels? Samsung’s 2014 UHD TVs Ship This Month
Wall Street Journal · 2 hours ago
Samsung’s 2014 lineup of Ultra High-Definition (aka 4K) TVs are on the way, and thanks to UHD content deals struck with Fox and Paramount—not to mention the…
Focusing on TVs and 1080p and 60Hz isn't the question, or the 'future'

Why does my mac sometimes freeze when waking up?

Why does my mac sometimes freeze when waking up? It only happens sometimes, but also happens spontaneously. 21' iMac 2011 model. It just started recenlty after a new firmware update from apple. Any advice or reasons why would be appreciated.

boot to lion recovery and run verify/repair on the hard drive. verify will say: appears to be okay OR needs to be repaired. No matter what outcome, you will repair anyways (as it will do some updating on the volume)
Process: hold command R during startup/ wait till you see mac os utility (might have to select english as the main language first) then disk utility/ select macintosh HD on the left, and then verify/repair on the right bottom side. Cheers!

Why does my mac keep freezing when i link to sites with videos

why does my mac keep freezing when i link to sites with videos

Do you have any better luck with that if you update to iTunes 10.6.1.7?
From the notes for the release:
iTunes 10.6.1 provides a number of improvements, including:
• Fixes several issues that may cause iTunes to unexpectedly quit while playing videos, changing artwork size in Grid view and syncing photos to devices.
• Addresses an issue where some iTunes interface elements are incorrectly described by VoiceOver and WindowEyes.
• Fixes a problem where iTunes may become unresponsive while syncing iPod nano or iPod shuffle.
• Resolves an ordering problem while browsing TV episodes in your iTunes library on Apple TV.
http://www.apple.com/itunes/download/

Why does my mac pro keep losing connection

why does my mac pro and my husband keep losing connection

Same thing happening to me... WiFi is loosing all the time, but I did something that would never work in 10000 years, but worked... I disabled WPA security password, and with no password i don't have problem since... try that...

Why does my Mac Pro now crash when screen saver starts?

I've upgraded my Mac Pro Mid 2010 (5,1) from 10.8.5 to 10.9.3 and I have a problem. When I use one of the screen savers without a photo, the screen saver works fine. But when I try to point it to one of my existing photos on the machine, it hangs when the screen saver kicks in and I have to force quit to get it running again.
I believe this must have to do with some permissions issues with where my image files are, but am not sure how to fix it.
Anybody else have this problem?
Thanks....

But does it then come fully awake? My MB Pro comes on with out of focus screen as if in a fog but once it comes awake it clears up, there is a progress bar at the bottom showing the progress from sleep

Why does my Mac Pro spontaneously restart?

My Mac Pro suddenly restarted and continues to do so when I sign back in. I can't use it more than five minutes without a spontaneous restart. I put in the OS installation disc and manually restarted from it and then went to disk utilities to repair my startup drive. Did this and nothing changed. Still continues to restart again and again and again. I'm trying to back up on external drive but that takes time and the computer restarts a few minutes into the backup procedure interrupting it. What can I do?
Thanks

There are so many replies, I don't know if anyone has solved this, but I have found something that has worked for me, twice, on my Mac Pro Tower 2008, OS 10.6.8. Like everyone else, my Mac was restarting by itself over and over. Here's what I did: 1) Clean up the dust inside (canned air and wiping down the flat surfaces that had a ton of dust on them. 2) Remove the video card and reseat it. Pulling the card out can be a bit of a trick, it can seem stuck, but you just have to pull firmly (ok, don't forget to unscrew the little screws that hold it in, and don't drop 'em!). Just pull it 'up' a few inches away, enough to pull it free of the contacts.
I suggest immediately reseating it, rather than pulling the card out to inspect and then realize that re-positioning it is awkward, especially if you haven't pulled the vid card before. Old pros can ignore this recommend.
This worked for me a few years ago and just recently (Late April 2015) the problem resurfaced. I can't say that cleaning did the trick, but it was awfully dusty inside my Mac anyway. Perhaps related (or not!), I've replaced my video card twice now, so I'm on my third vid card. They just don't seem to last.
I don't guarantee anything, but if you haven't tried this, give it a shot and best of luck to you!

Why does my Mac Pro rearrange my icons at bottom of my toolbar when i reboot?

Since i got my Mac Pro 10.6.8 it has rearranged my icons at my toolbar at bottom..First time it sent an icon to my finder section and i found it and drug it back and yesterday it sent my applications icon to my desktop screen.Is this a glitch? I know it will always be technical issues.But i can't drag it back so i just left it alone after several attempts.So is there a way to drag it back or just leave it alone? I'm sure sooner or later something else similar will happen.

Normally in most cases such as yours, reindexing Spotlight will correct the problem. Try it again.
http://support.apple.com/en-us/HT201716
This seems to be a common problem with Yosemite.
If that does not correct the problem, you may try SMC and PRAM resets:
http://support.apple.com/en-us/HT201295
http://web.archive.org/web/20140711222006/http://support.apple.com/kb/ht1379
(This is a guess on my part. No harm can come to the MBP performing these resets.)
The last option is a reinstall of the OSX.
May I assume that the overall amount of data is correct? If not, then we will have to look at OmniDiskSweeper and Grand Perspective.
Ciao.

Why does my mac pro hang when restarted?

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