Why does my Mac Air keeps logging out and restarting

Can you explain to me why my Mac Air keeps giving me this message? In the middle of a download and I get this when the computer goes into sleep. Once I get this message it will keep trying to log out until finally I log out and then back in again.

From the menu bar, select
 ▹ System Preferences... ▹ Security & Privacy
If there's a closed padlock icon in the lower left corner of the preference pane, click it and enter your login password when prompted.
Click the Advanced button and, in the sheet that opens, uncheck the box marked
Log out after … minutes of inactivity

Similar Messages

Why does my mac air keep cutting off during use?

My Mac Air is cutting out completely in the middle of use, even with a full charge?

Hello there, AKRomo22.
When having issues with your Mac restarting unexpectedly, the following Knowledge Base article offers up some great, in-depth steps for troubleshooting issues for resolving your issue:
OS X: When your computer spontaneously restarts or displays "Your computer restarted because of a problem." - Apple Support
Thanks for reaching out to Apple Support Communities.
Cheers,
Pedro.

Why does my mail program keep logging out?

While using the on board mail program we have recently started having an issue with the program logging our password out. Sometimes it happens one right after the other and other times it will go for an hour or so and ask for the password to be re-entered.
Any idea what could be causing this?
Thanks

Hello RCraig1984,
The article linked below details some useful information and steps that can help isolate and resolve issues with applications quitting unexpectedly.
OS X Lion: If an application quits unexpectedly
http://support.apple.com/kb/PH4063
Cheers,
Allen

Why does the Mac Airs keep dropping the network

We are using WEP and or WPA-WPA2 Personal. Once the lid is closed and reopend, system ask for admin user name and password. This happens on just the Macbook Airs. Our WAP's are Cisco. Or when a teacher is working with the unit, the signal will just drop for a few minutes, then come back up. Any one else having this issue and what did you do to resolve thie problem?
Thank.

Might be some of the same issues in this thread assuming your MBA is a 2013 model
New Macbook Air - wifi connectivity

Why Does My Macbook Retina Keep Shutting Down and Restarting?

Here is the error I got last time. I'm in the middle of finals and can't really afford to lose this computer for another 4 days. What should I do?
Sometimes the screen just black and I can hear noises when I turn the volume up and down. Then I close the computer and it restarts.
Apple Error:
Interval Since Last Panic Report: 1665 sec
Panics Since Last Report:          1
Anonymous UUID: 48A85F8E-79E9-E3E2-8D79-5289D8CE3E6E
Sat Dec 14 11:05:56 2013
panic(cpu 0 caller 0xffffff7fa40cbf1a): "GPU Panic: [<None>] 5 0 a0 d9 9 8 0 3 : NVRM[0/1:0:0]: Read Error 0x00000144: CFG 0xffffffff 0xffffffff 0xffffffff, BAR0 0x103000000 0xffffff8115fe8000 0x0e7150a2, D0, P2/4\n"@/SourceCache/AppleGraphicsControl/AppleGraphicsControl-3.4.5/src/AppleM uxControl/kext/GPUPanic.cpp:127
Backtrace (CPU 0), Frame : Return Address
0xffffff8105c36bf0 : 0xffffff8021e1d636
0xffffff8105c36c60 : 0xffffff7fa40cbf1a
0xffffff8105c36d30 : 0xffffff7fa254c26c
0xffffff8105c36df0 : 0xffffff7fa261f1f6
0xffffff8105c36e30 : 0xffffff7fa29342f3
0xffffff8105c36e50 : 0xffffff7fa2552f56
0xffffff8105c36ef0 : 0xffffff7fa24f0dae
0xffffff8105c36f10 : 0xffffff8022253298
0xffffff8105c36f40 : 0xffffff7fa246828b
0xffffff8105c36f50 : 0xffffff7fa4148533
0xffffff8105c36f60 : 0xffffff7fa415020b
0xffffff8105c36f80 : 0xffffff8021eb7f7c
0xffffff8105c36fd0 : 0xffffff8021ecedbb
0xffffff8115b23f50 : 0xffffff8021e2f35d
0xffffff8115b23f90 : 0xffffff8021e2f608
0xffffff8115b23fb0 : 0xffffff8021eb3257
      Kernel Extensions in backtrace:
com.apple.iokit.IOPCIFamily(2.8)[2FAEA49C-EA4C-39C6-9203-FC022277A43C]@0xffffff 7fa2451000->0xffffff7fa2479fff
com.apple.driver.AppleACPIPlatform(1.8)[209B2382-A61F-344C-8BBC-26331B9BA398]@0 xffffff7fa4141000->0xffffff7fa419afff
dependency: com.apple.iokit.IOACPIFamily(1.4)[A35915E8-C1B0-3C0F-81DF-5515BC9002FC]@0xfffff f7fa2f4b000
dependency: com.apple.iokit.IOPCIFamily(2.8)[2FAEA49C-EA4C-39C6-9203-FC022277A43C]@0xffffff 7fa2451000
com.apple.NVDAResman(8.1.6)[EA4F9902-5AAE-3F1D-A846-3796221C8C91]@0xffffff7fa24 eb000->0xffffff7fa278dfff
dependency: com.apple.iokit.IOPCIFamily(2.8)[2FAEA49C-EA4C-39C6-9203-FC022277A43C]@0xffffff 7fa2451000
dependency: com.apple.iokit.IONDRVSupport(2.3.7)[F16E015E-1ABE-3C40-AC71-BC54F4BE442E]@0xff ffff7fa24d7000
dependency: com.apple.iokit.IOGraphicsFamily(2.3.7)[9928306E-3508-3DBC-80A4-D8F1D87650D7]@0 xffffff7fa2494000
com.apple.driver.AppleMuxControl(3.4.5)[49FEF732-D7A3-327B-A7AA-6AC5A6E3DCFF]@0 xffffff7fa40be000->0xffffff7fa40d0fff
dependency: com.apple.driver.AppleBacklightExpert(1.0.4)[B5B1F368-132E-3509-9ED5-93270E3ABB DD]@0xffffff7fa40b9000
dependency: com.apple.iokit.IOPCIFamily(2.8)[2FAEA49C-EA4C-39C6-9203-FC022277A43C]@0xffffff 7fa2451000
dependency: com.apple.driver.AppleGraphicsControl(3.4.5)[4A2C8548-7EF1-38A9-8817-E8CB34B8DC A6]@0xffffff7fa40a5000
dependency: com.apple.iokit.IOACPIFamily(1.4)[A35915E8-C1B0-3C0F-81DF-5515BC9002FC]@0xfffff f7fa2f4b000
dependency: com.apple.iokit.IONDRVSupport(2.3.7)[F16E015E-1ABE-3C40-AC71-BC54F4BE442E]@0xff ffff7fa24d7000
dependency: com.apple.iokit.IOGraphicsFamily(2.3.7)[9928306E-3508-3DBC-80A4-D8F1D87650D7]@0 xffffff7fa2494000
com.apple.nvidia.gk100hal(8.1.6)[A6140B32-E6F2-37A2-94A1-D957086A854E]@0xffffff 7fa2799000->0xffffff7fa2ac8fff
dependency: com.apple.NVDAResman(8.1.6)[EA4F9902-5AAE-3F1D-A846-3796221C8C91]@0xffffff7fa24 eb000
dependency: com.apple.iokit.IOPCIFamily(2.8)[2FAEA49C-EA4C-39C6-9203-FC022277A43C]@0xffffff 7fa2451000
BSD process name corresponding to current thread: kernel_task
Mac OS version:
12F45
Kernel version:
Darwin Kernel Version 12.5.0: Sun Sep 29 13:33:47 PDT 2013; root:xnu-2050.48.12~1/RELEASE_X86_64
Kernel UUID: EA38B02E-2B88-309F-BA68-1DE29F605DD8
Kernel slide: 0x0000000021c00000
Kernel text base: 0xffffff8021e00000
System model name: MacBookPro10,1 (Mac-C3EC7CD22292981F)
System uptime in nanoseconds: 705606644681
last loaded kext at 434232444173: com.apple.driver.IOBluetoothSCOAudioDriver         4.1.7f2 (addr 0xffffff7fa41d8000, size 57344)
last unloaded kext at 210526772880: com.apple.iokit.IOEthernetAVBController    1.0.2b1 (addr 0xffffff7fa2fb5000, size 28672)
loaded kexts:
com.apple.driver.IOBluetoothSCOAudioDriver    4.1.7f2
com.apple.driver.IOBluetoothA2DPAudioDriver   4.1.7f2
com.apple.driver.AppleHWSensor      1.9.5d0
com.apple.driver.AudioAUUC 1.60
com.apple.iokit.IOBluetoothSerialManager 4.1.7f2
com.apple.filesystems.autofs     3.0
com.apple.driver.AGPM 100.13.12
com.apple.driver.X86PlatformShim   1.0.0
com.apple.driver.ApplePlatformEnabler       2.0.7d2
com.apple.driver.AppleMikeyHIDDriver      124
com.apple.driver.AppleHDA     2.4.7fc4
com.apple.driver.AppleIntelHD4000Graphics        8.1.6
com.apple.driver.AppleSMCLMU      2.0.3d0
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport      4.1.7f4
com.apple.iokit.IOUserEthernet        1.0.0d1
com.apple.Dont_Steal_Mac_OS_X   7.0.0
com.apple.GeForce        8.1.6
com.apple.driver.AppleUpstreamUserClient 3.5.12
com.apple.driver.AppleMikeyDriver   2.4.7fc4
com.apple.driver.AppleMuxControl    3.4.5
com.apple.driver.AppleMCCSControl         1.1.11
com.apple.driver.ApplePolicyControl 3.4.5
com.apple.driver.AppleIntelFramebufferCapri       8.1.6
com.apple.driver.AppleSMCPDRC    1.0.0
com.apple.driver.AppleSMBusPCI     1.0.11d1
com.apple.driver.AppleLPC      1.6.3
com.apple.driver.AppleUSBTCButtons        237.1
com.apple.driver.AppleUSBTCKeyboard    237.1
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib         1.0.0d1
com.apple.BootCache     34
com.apple.driver.XsanFilter     404
com.apple.driver.AppleUSBHub        635.4.0
com.apple.iokit.IOAHCIBlockStorage         2.3.5
com.apple.driver.AppleSDXC 1.4.3
com.apple.driver.AirPort.Brcm4331   615.20.17
com.apple.driver.AppleAHCIPort       2.6.6
com.apple.driver.AppleUSBXHCI     635.4.0
com.apple.driver.AppleUSBEHCI      621.4.6
com.apple.driver.AppleSmartBatteryManager        161.0.0
com.apple.driver.AppleACPIButtons   1.8
com.apple.driver.AppleRTC     1.5
com.apple.driver.AppleHPET   1.8
com.apple.driver.AppleSMBIOS        1.9
com.apple.driver.AppleACPIEC         1.8
com.apple.driver.AppleAPIC    1.7
com.apple.driver.AppleIntelCPUPowerManagementClient        214.0.0
com.apple.nke.applicationfirewall       4.0.39
com.apple.security.quarantine   2.1
com.apple.driver.AppleIntelCPUPowerManagement        214.0.0
com.apple.iokit.IOSerialFamily         10.0.6
com.apple.kext.triggers    1.0
com.apple.iokit.IOSCSIArchitectureModelFamily 3.5.6
com.apple.driver.DspFuncLib   2.4.7fc4
com.apple.iokit.IOAudioFamily         1.9.2fc7
com.apple.kext.OSvKernDSPLib       1.12
com.apple.iokit.IOAcceleratorFamily 74.15
com.apple.iokit.IOBluetoothHostControllerUSBTransport       4.1.7f2
com.apple.driver.X86PlatformPlugin 1.0.0
com.apple.iokit.IOSurface       86.0.4
com.apple.iokit.IOBluetoothFamily    4.1.7f2
com.apple.nvidia.gk100hal       8.1.6
com.apple.driver.AppleHDAController        2.4.7fc4
com.apple.iokit.IOHDAFamily 2.4.7fc4
com.apple.driver.AppleBacklightExpert        1.0.4
com.apple.driver.AppleSMBusController      1.0.11d1
com.apple.driver.AppleGraphicsControl       3.4.5
com.apple.NVDAResman        8.1.6
com.apple.iokit.IONDRVSupport     2.3.7
com.apple.iokit.IOGraphicsFamily    2.3.7
com.apple.driver.AppleSMC     3.1.5d4
com.apple.driver.IOPlatformPluginFamily   5.4.1d13
com.apple.driver.AppleUSBMultitouch        237.3
com.apple.iokit.IOUSBHIDDriver    623.4.0
com.apple.driver.AppleThunderboltDPInAdapter   2.5.0
com.apple.driver.AppleThunderboltDPAdapterFamily     2.5.0
com.apple.driver.AppleThunderboltPCIDownAdapter     1.3.2
com.apple.driver.AppleUSBMergeNub        621.4.6
com.apple.driver.AppleUSBComposite        621.4.0
com.apple.driver.AppleThunderboltNHI      1.9.2
com.apple.iokit.IOThunderboltFamily         2.7.7
com.apple.iokit.IOUSBUserClient     630.4.4
com.apple.iokit.IO80211Family         530.5
com.apple.iokit.IONetworkingFamily 3.0
com.apple.iokit.IOAHCIFamily         2.5.1
com.apple.iokit.IOUSBFamily 635.4.0
com.apple.driver.AppleEFINVRAM   2.0
com.apple.driver.AppleEFIRuntime    2.0
com.apple.iokit.IOHIDFamily 1.8.1
com.apple.iokit.IOSMBusFamily       1.1
com.apple.security.sandbox      220.3
com.apple.kext.AppleMatch      1.0.0d1
com.apple.security.TMSafetyNet       7
com.apple.driver.DiskImages    345
com.apple.iokit.IOStorageFamily       1.8
com.apple.driver.AppleKeyStore        28.21
com.apple.driver.AppleACPIPlatform 1.8
com.apple.iokit.IOPCIFamily   2.8
com.apple.iokit.IOACPIFamily         1.4
com.apple.kec.corecrypto         1.0
Model: MacBookPro10,1, BootROM MBP101.00EE.B02, 4 processors, Intel Core i7, 2.3 GHz, 8 GB, SMC 2.3f36
Graphics: Intel HD Graphics 4000, Intel HD Graphics 4000, Built-In, 512 MB
Graphics: NVIDIA GeForce GT 650M, NVIDIA GeForce GT 650M, PCIe, 1024 MB
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1600 MHz, 0x80AD, 0x484D54333531533642465238432D50422020
Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1600 MHz, 0x80AD, 0x484D54333531533642465238432D50422020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xEF), Broadcom BCM43xx 1.0 (5.106.98.100.17)
Bluetooth: Version 4.1.7f2 12718, 3 service, 21 devices, 3 incoming serial ports
Network Service: Wi-Fi, AirPort, en0
Serial ATA Device: APPLE SSD SM256E, 251 GB
USB Device: hub_device, 0x8087 (Intel Corporation), 0x0024, 0x1a100000 / 2
USB Device: FaceTime HD Camera (Built-in), apple_vendor_id, 0x8510, 0x1a110000 / 3
USB Device: hub_device, 0x8087 (Intel Corporation), 0x0024, 0x1d100000 / 2
USB Device: hub_device, 0x0424 (SMSC), 0x2512, 0x1d180000 / 3
USB Device: Apple Internal Keyboard / Trackpad, apple_vendor_id, 0x0262, 0x1d182000 / 5
USB Device: BRCM20702 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x1d181000 / 4
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x8286, 0x1d181300 / 8

Ah right at the top.
panic(cpu 0 caller 0xffffff7fa40cbf1a): "GPU Panic: [<None>] 5 0 a0 d9 9 8 0 3 :
This is a common problem with new Mac notebooks. There arre many threads on this and other forums about it.
Tae your Mac to an Apple store to be fixed or replaced.

Mac keeps logging out and blanking screen.

hi.
for some reason my mac just keeps logging out and blanking the screen at random points each day.
its VERY weird.
is there anything i can do about it?

There are a number of things that you could try - resetting SMC and PRAM, doing an Apple Hardware Test, reinstalling system software, etc.
But, if I were you, I'd take the unit into an Apple Store or an AASP. But be certain that you backup all of your data before you take it in.
When there's no rhyme nor reason to restarts and 'blank screens' on a daily basis, it's best just to let Apple handle it - they can run tests that aren't available to mere mortals. Could be anything...
Clinton

Why does my airport express keep cutting out?

Why does my airport express keep cutting out?

I have a 1st gen Airport Express and use it to stream music from my PC, iPhone 4, iPad and iPod Touch. My Airport Express is connected to a Teac UD-H01 DAC via an optical cable which is connected to an amp and speakers. I had no problems at all with this set up until I upgraded the Airport Express firmware to 7.6.3. The sound then started to drop out frequently. To cut a long story short after various testing, the problem had to be the Airport Express. I called Apple support but they were not much help and couldn't fix the problem and said they would speak to engineering and phone back. While I was waiting I decided to have another go to find the problem and opened the airport utility and saw that there was an option to downgrade the firmware. At this point I realised that the problems started about the same time that I upgraded the firmware to 7.6.3 but didn't think at the time that Apple would release a firmware that didn't work. Anyway I downgraded to 7.6.1 and hey presto, everything worked again. A couple of days ago I noticed that firmware 7.6.4 was available and thought I'd give it a go, not good - same problem as 7.6.3. I've downgraded to 7.6.1 again and all is well. Hope this helps.

Why does my mac book keep shutting down? I mean it's on and then off suddenly

Why does my mac book keep shutting down? I mean it's on and then off suddenly

Do any informative dialogs appear after you restart it?
Power or other problems related to unexpected system sleep, shutdown, lights or fans call for an SMC reset. Read all the steps.
Before Resetting the SMC
Try each of the following steps in this order before you reset the SMC. Test the issue after completing each troubleshooting step to determine if the issue still occurs.
Press Command + Option + Escape to force quit any application that is not responding.
Put your Mac to sleep by choosing the Apple () menu from the upper-left menu bar and then choosing Sleep. Wake the computer after it has gone to sleep.
Restart your Mac by choosing the Apple () menu from the upper-left menu bar and then choosing Restart.
Shut down your Mac by choosing the Apple () menu from the upper-left menu bar and then choosing Shut Down.
Resetting the SMC on Mac portables with a battery you can remove
Shut down the computer.
Disconnect the MagSafe power adapter from the computer, if it's connected.
Remove the battery (to remove the battery - click here: MacBook or MacBook Pro).
Press and hold the power button for 5 seconds.
Release the power button.
Reconnect the battery and MagSafe power adapter.
Press the power button to turn on the computer.
Still having problems? Replace steps 6 and 7 with the following:
Reconnect just the MagSafe power adapter.
Press the power button to turn on the computer,
Then reconnect the battery.
Resetting the SMC on portables with a battery you should not remove on your own
Shut down the computer.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if it's not already connected.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time. The power adapter indicator light will cycle off / on once.
Release all the keys and the power button at the same time.
Press the power button to turn on the computer.

Why does my mac air always restart when I open it in our university?

Why does my mac air always restart when I open it in our university?
This has been always bothering me for some time already. Whenever I open my macbook air in our university it always warns me to restart my device. When I do the same thing happens over and over again until it reached 27 reports.

I'd make a sound too if i was put into a bag haha.
Only thing i could think of it it has a mind of its own or your putting your computer to sleep. Try shutting down your mac before placing in your bag and see if that changes things.

Why does my apple tv keep dropping out of home sharing.

why does my apple tv keep dropping out of home sharing.

I use homeplug powerline adapters to create my home Lan. I've never had any problem with my ATV 2.
This isn't ideal either, I would rather have shielded CAT7 cables reach all the way to my modem.
Either way, wired solutions are more reliable and have a higher potential speed as wireless uses pulsed electromagnetic radiation as a means for transportation in stead of copper or fiber optic cables
The World Health Organization's IARC has recently classified radio frequency electromagnetic fields as possibly level 2 carcinogenic to humans, concluding:
"the evidence, while still accumulating, is strong enough to support a conclusion and the 2B classification. The conclusion means that there could be some risk, and therefore we need to keep a close watch for a link between cell phones and cancer risk."

Why does my wi-fi keep dropping out with Lion ?

Why does my wi-fi keep dropping out since I purchased Lion?
Why does my wi-fi preference keep getting lost every time my computer goes into sleep mode?
Is there any way of killing the Lion and getting Snow Leopard back.
Signed,
Tim (Had a flawless computer until I purchased Lion!) Lyke
< Edited by Host >

I use homeplug powerline adapters to create my home Lan. I've never had any problem with my ATV 2.
This isn't ideal either, I would rather have shielded CAT7 cables reach all the way to my modem.
Either way, wired solutions are more reliable and have a higher potential speed as wireless uses pulsed electromagnetic radiation as a means for transportation in stead of copper or fiber optic cables
The World Health Organization's IARC has recently classified radio frequency electromagnetic fields as possibly level 2 carcinogenic to humans, concluding:
"the evidence, while still accumulating, is strong enough to support a conclusion and the 2B classification. The conclusion means that there could be some risk, and therefore we need to keep a close watch for a link between cell phones and cancer risk."

What is application memory and why does my macbook pro keep running out of it?

what is application memory and why does my macbook pro keep running out of it?

There is excessive swapping of data between physical memory (that is, the memory chips on the logic board) and virtual memory (one or more files on the startup volume.) That activity is relatively slow and causes the whole system to be less responsive. It can happen for two reasons:
          A long-running process with a memory leak (a kind of bug)
          Not enough memory for your usage pattern
Please note that if the cause is a memory leak, installing more memory will not help. That's likely if you already have more than 4 GB of memory. Tracking down a memory leak can be difficult, and it may come down to a process of elimination.
These instructions are for OS X 10.9 and later. Some details may be slightly different for earlier versions of OS X.
When you notice the swap activity, open the Activity Monitor application and select All Processes from the View menu, if it's not already selected. Select the Memory tab. Click the heading of the Real Mem column in the process table twice to sort the table with the highest value at the top. If you don't see that column, select
          View ▹ Columns ▹ Real Memory
from the menu bar.
If one process (excluding "kernel_task") is using much more memory than all the others, that could be an indication of a leak. A better indication would be a process that continually grabs more and more real memory over time without ever releasing it. Here is an example of how it's done.
The processes named "Safari Web Content" render web pages for Safari. They use a lot of memory and may leak if certain Safari extensions or third-party web plugins are installed. Consider them prime suspects.
Another process often implicated in memory leaks is "inkjet4" or "inkjet8," which is a component of the HP printing software. If it's present, force-quit the process in Activity Monitor to solve the problem temporarily. Empty the print queues in the Printers & Scanners preference pane (which has a slightly different name in each recent version of OS X.) If you don't use an HP printer, reset the printing system. Otherwise, if the problem is recurrent, update the software (which may not help) or contact HP support.
"Wired" memory should be a small part of the total. That memory is not swapped, but it makes less physical memory available which may then result in swapping. If you have a lot of wired memory, that's usually an indication of a memory leak in a third-party program that modifies the operating system at a low level. Ask for guidance in that case.
If you don't have an obvious memory leak, your options are to install more memory (if possible) or to run fewer programs simultaneously.
The next suggestion is only for users familiar with the shell. For a more precise, but potentially misleading, test, run the following command:
sudo leaks -nocontext -nostacks process | grep total
where process is the name of a process you suspect of leaking memory. Almost every process will leak some memory; the question is how much, and especially how much the leak increases with time. I can’t be more specific. See the leaks(1) man page and the Apple developer documentation for details.

Why does my mac air sound like it was going to take off every time i use the wifi????

why does my mac air sound like it was going to take off every time i use the wifi????

Power Cycle
Power off the router. Unplug it from the wall. Wait a while.
Plug it back to the wall. Power the router on. Wait until all the lights are lit properly. It will take a while.
Restart the computer.
Start up in Safe Mode.
http://support.apple.com/kb/PH14204?viewlocale=en_US
Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".

Why does my Mac air have a DVD player app but no where to put a DVD?

why does my mac air have a DVD player app but no where to put a DVD?

Because you can purchase an external optical drive like the Apple USB SuperDrive.
Apple USB SuperDrive - Apple Store (U.S.)

1st-I was able to log into my account but was not able to open any applications, tried another account and same thing. was able to log out and restart but now am unable to use mouse. g5 dual core

1st-I was able to log into my account but was not able to open any applications, tried another account and same thing. was able to log out and restart but now am unable to use mouse. g5 dual core, can't remember the os without seeing it.

Could be many things, we should start with this...
"Try Disk Utility
1. Insert the Mac OS X Install disc, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.
3. Click the First Aid tab.
4. Select your Mac OS X volume.
5. Click Repair. Disk Utility checks and repairs the disk."
http://docs.info.apple.com/article.html?artnum=106214
Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)
Let us know how far you get, or results.

Why does my Mac Air keeps logging out and restarting

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