Macbook Pro 2015 Base line model, screen tearing and scroll "lag"

When I scroll up and down I notice "screen lag" in where in applications folder scrolling up and down the icons look slow and sluggish. When I move windows left and right up and down you can see screen tearing, a line mid way of the window when moving it up and down or left and right with heavy ghosting. Am I crazy or my macbook has issues?

Your MBP is under warranty. Make an appointment at an Apple store genius bar and have it repaired.
Ciao.

Similar Messages

Picture Included. Mid 2012 13 inch Macbook Pro green/purple lines on screen. Freezes. Sometimes 3 beeps.

Alright I have a Mid 2012 13 inch Macbook Pro purchased in June 2012. For about the last month, I have this issue where as I am using it random colored lines will show up on the screen (lines usually green, purple, but occasionally the issue occurs while booting and lines are black on white background). As soon as the lines appear, everything freezes. Sometimes the computer automatically reboots. Other times, it will just turn off and start beeping 3 times in a row. AT first, I thought this may be a video card error because it happened a lot when I was watching videos. However, it also happens randomly when I am just using safari/chrome with no other programs runnings. The most annoying part of this issue is that it is completely random. Computer won't act up for maybe 2 days straight during all activities (videos, surfing the web, etc). Then I will have a day where the problem is consistent.
Also, although I think this is just a correlation, all problems started after upgrading to Yosemite.
Picture below:
Does anyone else with a Macbook Pro (especially 2012) have this issue? These two discussions seem to be describing this very situation:
Screen froze, purple lines, three beeps. Help!
Macbook Pro screen glitches, 3 beeps, NOT THE RAM

thanks alex. I'm going to the genius bar later this week for them to get a look at the issue.
in the meantime, do you have any idea why the problem occurs when I apply a little pressure to the bottom of the computer (under the command screen). here is a video of the situation: https://www.youtube.com/watch?v=88C34bHZAd8&feature=youtu.be
also, i found this thread describing my exact situation: Field of vertical lines all over Macbook Pro screen? (+ freezes, beeps)
do you have any idea of a solution from reading that?

My new Macbook Pro 13 keeps minimizing full screen applications and sending me back to the desktop. Any Help?

I can't stay in full screen applications without being returned to the desktop within 30 seconds. Is anyone else experiencing this problem or can assist
I am testing it without running any applications other than safari in full screen. It act like it is "swiping" me back to the desktop screen. I am not touching my trackpad or keyboard.
Thanks,
Corey

Do you have Google Drive installed? At the following thread at least one person had a similar issue as you: for more details please check out this thread:https://discussions.apple.com/thread/5526061?tstart=0

Lightroom (CC) 2015 is not working with Macbook pro 2015 model ! any clues about it ??

lightroom (CC) 2015 is not working with Macbook pro 2015 model ! any clues about it ??

Ahmed
Generally signing out and signing in (signing out and back into the Creative Cloud application ) will fix this. If it isn't resolving the issue for you, let us know what you see and we can try something else.
Pattie

My 2014 MacBook Pro has a line across the screen when minimizing

I am having a problem with my 2014 MacBook Pro with the 2.7 Ghz i5 and 8Gb ram.
When I minimize my screen, irrespective of the program, a white line appears across the desktop and sometimes blinks or stays, then goes away. It does not happen every time...However, I already returned one 2014 MacBook Pro for this issue and now it seems this computer is doing it too. I am running Mavericks 10.9 and to make sure it wasn't anything that I had on the original computer, I did not do a backup from time machine; I reloaded the programs from scratch. I have never had this problem with my macbook air and I have a video of the issue occurring.
Does anyone else have this problem?
Thanks!

I don't think this is going to do the trick, because the iPad hardware has probably been damaged - but did you try rebooting the iPad?
Reboot the iPad by holding down on the sleep and home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider - let go of the buttons.
You can see your replacement options and cost here.
http://support.apple.com/kb/index?page=servicefaq&geo=United_States&product=ipad

Early 2013 Macbook Pro Retina 2.7 i7 512GB SSD and 16gb Ram with Serious Cuda Problems! Trying to teach Apple their Macbook Pro Retina isn't a Pro Jan. 11. 2015.

Apple replaced the logic board, wiped the computer, did a fresh instal of the OS, and also a fresh instal of all the programs during the beginning of 2015. The GeekBench scores are the highest of any of the similar computers (at least on the day of my testing). But here's what's happening. The Macbook Pro Retina has a GeForce GT 650m with Cuda Technology and it can't handle editing in Premiere Pro with Cuda Acceleration turned on. Open CL, a second form of graphic acceleration on the Macbook Pro, appears to be functioning properly.
At the Apple Store on 1-10-2015, I was told that since the logic board and the graphic cards have been replaced that there is nothing they can do and they recommend contacting Corporate. This comes after they told me to buy a new logic board and that that would solve the problem. This comes after Apple did not listen, for over a month, about the possibility that they didn't properly build a professional notebook computer.
The computer displays a black program monitor screen, at random times, when the user edits footage with Cuda Acceleration enabled. It used to lead to an entire system crash and/or a Premiere Pro crash before the operating system was completely re-installed. My solution, since I bought the computer, was to edit in Open CL... However, I've come to learn that there is a major difference in performance between Open CL and Cuda Acceleration.
For the Macbook Pro Retina, Adobe Media Encoder render times are about 20% faster with Cuda Acceleration than Open CL. The 2013 Macbook Pro Retina appears to be able to handle Cuda Acceleration in Media Encoder, but I have had a number of issues leading to program crashes on every project before the new logic board and operating system were installed. For over a year and a half, I actually never used Cuda Acceleration. Having sent every crash report and user data to Apple over that time, I truly expected an update of some sorts and it never came.
FYI: The latest Macbook Pro Retina uses the GeForce GT 750m... This is essentially the same graphic card that performs about 10 - 20% faster due to a new "boost mode." More importantly, it actually has the exact same number of Cuda cores. Having the same number of Cuda Cores means that the Cuda Acceleration is essentially the same when exporting or viewing video. To prove a point to Apple that their 2013 Macbook Pro Retina isn't functioning properly, I bought the latest computer with the 2.5 i7, 16gb Ram, 512gb SSD and I can honestly say that the 2014 model works perfectly fine with Cuda Acceleration turned on while editing in Premiere. I can also say that a proper render test proved the 2013 and 2014 model to be the exact same.
I'm new to this whole pay $2700 for a computer that your manufacturer didn't / can't test properly, so I will be contacting Apple and speaking with Senior Advisors, their Customer Support division, and will soon speak with their Corporate branch. I'm confident that the Early 2013 Macbook Pro Retina with a 2.7 i7 16gb Ram and a 512 SSD is nearly the same at rendering video and editing video, provided the Cuda Acceleration works, as their latest 2014 Macbook Pro Retina with the 2.5 i7 processor 16gb Ram, and a 512 SSD. It's truly a great computer and a great build, minus their current inability to properly test / diagnose their computer.
Knowing that the latest graphic card in the Macbook Pro lineup is essentially the same model, I feel that Apple is not directly looking into the viability and life span of their current Macbook Pro Retina product line. They can't test for performance issues relating to their graphic cards, so why consider buying from them when the end user is actually in a position to experience up to a 20% decrease in certain professional programs.
For future reference, I'd strongly urge other individuals to avoid purchasing Apple products if they offer Cuda Technology. In my opinion, Apple is an Open CL organization, at best, who is not responsibly manufacturing / producing computers that fit their organization's strengths. For a fact, they can't test their Cuda Technology and won't even attempt to address Cuda Acceleration errors for Apple owners (01-11-2015). I say this having walked out of the Apple Store on 1-10-2015 with virtually no support other than to contact Corporate.

Looks like a RAM issue.
Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1600 MHz, 0x02FE, 0x000000000000000000000000000000000000
Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1600 MHz, 0x02FE, 0x000000000000000000000000000000000000

Macbook Pro mid 2009 13 inch suddenly freezes and grey screen appears stating press key to restart

Macbook Pro mid 2009 13 inch suddenly freezes and grey screen appears stating press key to restart. Here is my recent crash report. Please help me.
Anonymous UUID:
714EBD8C-083D-E200-A9BD-6F925A8F8F14
Thu May 29 22:30:04 2014
panic(cpu 0 caller 0xffffff80026dbf5e): Kernel trap at 0xffffff80026d1197, type 14=page fault, registers:
CR0: 0x0000000080010033, CR2: 0xffffef8022f973c8, CR3: 0x0000000089778000, CR4: 0x0000000000000660
RAX: 0x000000000000001c, RBX: 0x00000000e00002c2, RCX: 0xffffff8002abb7d4, RDX: 0xffffef8022f973c0
RSP: 0xffffff800d2cb6a0, RBP: 0xffffff800d2cb6a0, RSI: 0x0000000000000001, RDI: 0xffffef8022f973c0
R8: 0x0000000000000001, R9: 0x0000000000000001, R10: 0xffffff8014ea65e8, R11: 0xffffff809b3160f0
R12: 0xffffef8022f973c0, R13: 0x0000000000000001, R14: 0xffffff800d2cb6ec, R15: 0x0000000000000001
RFL: 0x0000000000010202, RIP: 0xffffff80026d1197, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0xffffef8022f973c8, Error code: 0x0000000000000000, Fault CPU: 0x0
Backtrace (CPU 0), Frame : Return Address
0xffffff800d2cb330 : 0xffffff8002622fa9
0xffffff800d2cb3b0 : 0xffffff80026dbf5e
0xffffff800d2cb580 : 0xffffff80026f3456
0xffffff800d2cb5a0 : 0xffffff80026d1197
0xffffff800d2cb6a0 : 0xffffff80026afd0e
0xffffff800d2cb6d0 : 0xffffff8002abb751
0xffffff800d2cb710 : 0xffffff8002abb54f
0xffffff800d2cb760 : 0xffffff7f8413fd2f
0xffffff800d2cb7a0 : 0xffffff7f84188b21
0xffffff800d2cb7e0 : 0xffffff7f841708d2
0xffffff800d2cb850 : 0xffffff7f84170fc8
0xffffff800d2cb890 : 0xffffff7f8413dfea
0xffffff800d2cba10 : 0xffffff7f8416d940
0xffffff800d2cbad0 : 0xffffff7f8413cad9
0xffffff800d2cbb20 : 0xffffff8002acea56
0xffffff800d2cbb40 : 0xffffff8002ad0051
0xffffff800d2cbba0 : 0xffffff8002acdabf
0xffffff800d2cbcf0 : 0xffffff80026b66a8
0xffffff800d2cbe00 : 0xffffff8002626bf1
0xffffff800d2cbe30 : 0xffffff80026139f5
0xffffff800d2cbea0 : 0xffffff800261e043
0xffffff800d2cbf20 : 0xffffff80026c975d
0xffffff800d2cbfb0 : 0xffffff80026f3a28
Kernel Extensions in backtrace:
com.apple.GeForceTesla(8.2.4)[24ED915E-02F3-3A31-8502-6AA41FFCA420]@0xffffff7f84 12b000->0xffffff7f841f5fff
dependency: com.apple.iokit.IOPCIFamily(2.9)[244D4E48-78E6-3369-8D76-285C66EF9BF4]@0xffffff 7f82cbe000
dependency: com.apple.iokit.IONDRVSupport(2.4.1)[B93BBFC9-9ED5-3DDD-8CED-5EDA081BB997]@0xff ffff7f8324b000
dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[B889D3AB-CCC0-3FCD-A83E-D2E3E4CB537B]@0 xffffff7f83208000
dependency: com.apple.nvidia.classic.NVDAResmanTesla(8.2.4)[6EB3FF52-A4F6-3496-AE9C-D89B00F DE504]@0xffffff7f8325b000
BSD process name corresponding to current thread: Skype
Mac OS version:
13D65
Kernel version:
Darwin Kernel Version 13.2.0: Thu Apr 17 23:03:13 PDT 2014; root:xnu-2422.100.13~1/RELEASE_X86_64
Kernel UUID: ADD73AE6-88B0-32FB-A8BB-4F7C8BE4092E
Kernel slide:
0x0000000002400000
Kernel text base: 0xffffff8002600000
System model name: MacBookPro5,5 (Mac-F2268AC8)
System uptime in nanoseconds: 60200033152435
last loaded kext at 44797399467641: com.apple.filesystems.smbfs
2.0.2 (addr 0xffffff7f84b15000, size 335872)
last unloaded kext at 15796237223278: com.apple.macos.driver.AppleUSBEthernetHost
7.0 (addr 0xffffff7f84b15000, size 20480)
loaded kexts:
net.telestream.driver.TelestreamAudio
1.1.0
com.rim.driver.BlackBerryUSBDriverInt
0.0.97
com.apple.filesystems.smbfs
2.0.2
com.apple.filesystems.ntfs
3.11
com.apple.driver.AppleHWSensor
1.9.5d0
com.apple.driver.AGPM
100.14.15
com.apple.filesystems.autofs
3.0
com.apple.driver.AppleMikeyHIDDriver
124
com.apple.driver.AppleHDA
2.6.1f2
com.apple.driver.AppleMikeyDriver
2.6.1f2
com.apple.GeForceTesla
8.2.4
com.apple.driver.AppleUpstreamUserClient
3.5.13
com.apple.driver.AudioAUUC
1.60
com.apple.iokit.IOUserEthernet
1.0.0d1
com.apple.iokit.IOBluetoothSerialManager
4.2.4f1
com.apple.Dont_Steal_Mac_OS_X
7.0.0
com.apple.driver.AppleHWAccess
1
com.apple.driver.AppleBacklight
170.3.5
com.apple.driver.AppleMCCSControl
1.1.12
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport
4.2.4f1
com.apple.driver.AppleSMCLMU
2.0.4d1
com.apple.driver.ACPI_SMC_PlatformPlugin
1.0.0
com.apple.driver.AppleLPC
1.7.0
com.apple.driver.SMCMotionSensor
3.0.4d1
com.apple.driver.AppleUSBTCButtons
240.2
com.apple.driver.AppleUSBTCKeyboard
240.2
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless
1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib
1.0.0d1
com.apple.BootCache
35
com.apple.driver.AppleIRController
325.7
com.apple.driver.AppleUSBCardReader
3.4.1
com.apple.iokit.SCSITaskUserClient
3.6.6
com.apple.driver.XsanFilter
404
com.apple.iokit.IOAHCIBlockStorage
2.5.1
com.apple.driver.AirPort.Brcm4331
700.20.22
com.apple.driver.AppleFWOHCI
5.0.2
com.apple.driver.AppleUSBHub
666.4.0
com.apple.driver.AppleAHCIPort
3.0.0
com.apple.nvenet
2.0.21
com.apple.driver.AppleUSBOHCI
656.4.1
com.apple.driver.AppleUSBEHCI
660.4.0
com.apple.driver.AppleSmartBatteryManager
161.0.0
com.apple.driver.AppleRTC
2.0
com.apple.driver.AppleHPET
1.8
com.apple.driver.AppleACPIButtons
2.0
com.apple.driver.AppleSMBIOS
2.1
com.apple.driver.AppleACPIEC
2.0
com.apple.driver.AppleAPIC
1.7
com.apple.driver.AppleIntelCPUPowerManagementClient
217.92.1
com.apple.nke.applicationfirewall
153
com.apple.security.quarantine
3
com.apple.driver.AppleIntelCPUPowerManagement
217.92.1
com.apple.AppleGraphicsDeviceControl
3.5.26
com.apple.kext.triggers
1.0
com.apple.driver.DspFuncLib
2.6.1f2
com.apple.vecLib.kext
1.0.0
com.apple.driver.AppleHDAController
2.6.1f2
com.apple.iokit.IOHDAFamily
2.6.1f2
com.apple.nvidia.classic.NVDANV50HalTesla
8.2.4
com.apple.nvidia.classic.NVDAResmanTesla
8.2.4
com.apple.iokit.IOAudioFamily
1.9.7fc2
com.apple.kext.OSvKernDSPLib
1.14
com.apple.iokit.IOSurface
91.1
com.apple.iokit.IOSerialFamily
10.0.7
com.apple.iokit.IOBluetoothFamily
4.2.4f1
com.apple.driver.AppleBacklightExpert
1.0.4
com.apple.driver.AppleSMBusController
1.0.11d1
com.apple.iokit.IOBluetoothHostControllerUSBTransport
4.2.4f1
com.apple.iokit.IOFireWireIP
2.2.6
com.apple.driver.IOPlatformPluginLegacy
1.0.0
com.apple.driver.AppleSMBusPCI
1.0.12d1
com.apple.driver.IOPlatformPluginFamily
5.7.0d11
com.apple.iokit.IONDRVSupport
2.4.1
com.apple.iokit.IOGraphicsFamily
2.4.1
com.apple.driver.AppleSMC
3.1.8
com.apple.driver.AppleUSBMultitouch
240.9
com.apple.iokit.IOUSBHIDDriver
660.4.0
com.apple.driver.AppleUSBMergeNub
650.4.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice
3.6.6
com.apple.iokit.IOBDStorageFamily
1.7
com.apple.iokit.IODVDStorageFamily
1.7.1
com.apple.iokit.IOCDStorageFamily
1.7.1
com.apple.iokit.IOAHCISerialATAPI
2.6.1
com.apple.iokit.IO80211Family
630.35
com.apple.iokit.IOFireWireFamily
4.5.5
com.apple.iokit.IOUSBUserClient
660.4.2
com.apple.iokit.IOAHCIFamily
2.6.5
com.apple.iokit.IONetworkingFamily
3.2
com.apple.driver.NVSMU
2.2.9
com.apple.driver.AppleEFINVRAM
2.0
com.apple.driver.AppleEFIRuntime
2.0
com.apple.iokit.IOHIDFamily
2.0.0
com.apple.iokit.IOSMBusFamily
1.1
com.apple.security.sandbox
278.11
com.apple.kext.AppleMatch
1.0.0d1
com.apple.security.TMSafetyNet
7
com.apple.driver.AppleKeyStore
2
com.apple.driver.DiskImages
371.1
com.apple.iokit.IOReportFamily
23
com.apple.driver.AppleFDEKeyStore
28.30
com.apple.iokit.IOUSBMassStorageClass
3.6.0
com.apple.driver.AppleUSBComposite
656.4.1
com.apple.iokit.IOSCSIBlockCommandsDevice
3.6.6
com.apple.iokit.IOStorageFamily
1.9
com.apple.iokit.IOSCSIArchitectureModelFamily
3.6.6
com.apple.iokit.IOUSBFamily
677.4.0
com.apple.driver.AppleACPIPlatform
2.0
com.apple.iokit.IOPCIFamily
2.9
com.apple.iokit.IOACPIFamily
1.4
com.apple.kec.pthread
1
com.apple.kec.corecrypto
1.0
System Profile:
Model: MacBookPro5,5, BootROM MBP55.00AC.B03, 2 processors, Intel Core 2 Duo, 2.53 GHz, 6 GB, SMC 1.47f2
Graphics: NVIDIA GeForce 9400M, NVIDIA GeForce 9400M, PCI, 256 MB
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1333 MHz, 0x830B, 0x4E54344743363442384842304E532D434720
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80AD, 0x484D54333235533642465238432D48392020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8D), Broadcom BCM43xx 1.0 (5.106.98.100.22)
Bluetooth: Version 4.2.4f1 13674, 3 services, 15 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: TOSHIBA MK3255GSXF, 250.06 GB
Serial ATA Device: MATSHITADVD-R   UJ-868
USB Device: Built-in iSight
USB Device: Internal Memory Card Reader
USB Device: Apple Internal Keyboard / Trackpad
USB Device: IR Receiver
USB Device: Wireless Optical Mouse
USB Device: BRCM2046 Hub
USB Device: Bluetooth USB Host Controller
Thunderbolt Bus:
Model: MacBookPro5,5, BootROM MBP55.00AC.B03, 2 processors, Intel Core 2 Duo, 2.53 GHz, 6 GB, SMC 1.47f2
Graphics: NVIDIA GeForce 9400M, NVIDIA GeForce 9400M, PCI, 256 MB
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1333 MHz, 0x830B, 0x4E54344743363442384842304E532D434720
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80AD, 0x484D54333235533642465238432D48392020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8D), Broadcom BCM43xx 1.0 (5.106.98.100.22)
Bluetooth: Version 4.2.4f1 13674, 3 services, 15 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: TOSHIBA MK3255GSXF, 250.06 GB
Serial ATA Device: MATSHITADVD-R   UJ-868
USB Device: Built-in iSight
USB Device: Internal Memory Card Reader
USB Device: Apple Internal Keyboard / Trackpad
USB Device: IR Receiver
USB Device: Wireless Optical Mouse
USB Device: BRCM2046 Hub
USB Device: Bluetooth USB Host Controller
Thunderbolt Bus:

riyazfrombangalore,
your 13-inch Mid 2009 MacBook Pro requires 1066 MHz RAM, but you have 1333 MHz RAM installed. Try replacing the 1333 MHz RAM with 1066 MHz RAM — Macs can be picky about the RAM which they find acceptable.

Macbook pro 2015 gaming

hey thinking about buying macbook pro 2015 i5 16gb ram and 256SSD intel Iris Graphics 6100 just wondering if you guys think it will be able to power a external monitor running at 1080p i want to be able to play sc2 and LoL at solid 60 fps specially sc2 i like constant 60fps but i play sc2 on low setting but might have shaders on medium will that run at the setting i want? and LoL same thing but i like to have characters and environment to very high and AA just wondering if it will be able to handle that because will be using external keyboard and mouse for completive gaming those are my main games on computer anyway and would rather stay with mac then go back to windows but will put windows on my mac if it helps FPS on the machine

yea i know that i had a gaming pc just i love mac os and want to keep all things on my one machine so i was wondering if it would work because i was going to setup my macbook pro on a stand connected to a monitor 1080p with keyboard and mouse but i think it will work because I've just downgraded my MBA 2013 to mavericks i had yosemite but it was using to much cpu i had better battery and cpu performance on my MBA when i had mavericks any way I'm getting 60fps MBA native res so 1440x900 the fps indicator does sometimes say 27-38 fps but you don't see it at all like nothing and I've always played 60fps so i know when frames drop so i think its going to work anyways but i am making a build up for a cheap gaming pc just for lol and sc2 won't be used for anything else but gaming and streaming game on twitch but would love a macbook pro for the screen and performance would that be a good upgrade from my macbook air 2013 4GB ram and 256 SSD or should i just wait till the next cpu updated because its not a big jump from last years model and the might do i design change this year your think?

My macbook pro is stuck on grey screen with apple symbol in center with the progress circle under it continusly spinning. After I had turned it on. Prior to turning it on I had to force close and shut down a few hours prior. Please Help?

My macbook pro is stuck on grey screen with apple symbol in center with the progress circle under it continusly spinning. After I had turned it on. Prior to turning it on I had to force close and shut down a few hours prior. Please Help I have tried everything I know to do

Unfortunately this means that there is a problem in the boot sector of your hard drive. It might be indicative of a fundamental corruption in the coding that allows your computer to boot your operating system from your hard drive. I had this problem twice and it resulted in me having to get a new hard drive and restore my data.
In other words, your computer can't talk to your operating system so you can't access your data.
Here is my advice: DON'T CALL APPLE TECH SUPPORT though they are kind and usually helpful it will take you an hour just to explain the situation and they will only tell you to do what I'm gonna say here.
First: Shut down your computer completely
Two: boot up while holding down the following keys: command, option, p, and r. The computer will reboot 3 times. This solution will likely fail so if you're frustrated skip to the next step.
Three: Boot up while holding down the option key. Select recovery drive. Select your default language. Select disk utility, click on Macintosh HD, and select "verify and repair volume." Likely the verification will produce some line like "unused node not erased." Or something like that. If anything using the words "node structure" comes up, you need a new hard drive.
If after verification and repairs you still can't boot I sincerely hope you have apple care because you will need a new hard drive. Set up an appointment to come in to the apple store, they will tell you to go and get data recovery, just ask them to give you the old hard drive. Unless you have an up to date backup in which case you can just restore from that. If you're lucky the only issue is with the boot sector which means that if you ask them to give you the old hard drive, you can buy an enclosure and you have effectively been given a free external hard drive. It still works to store data just not to load an operating system.
If you have a back up drive bring it to the apple store and they'll do the whole thing right there, it should take around an hour and a half but may take longer.
Hope this helps, it's annoying but it's your safest bet.
All the best.

Power on MacBook Pro takes me to login screen. All user icons appear as normal. Once I enter password for myself (administrator) spinning takes longer than normal and doesn't log in but displays a no sign

Power on MacBook Pro takes me to login screen. All user icons appear as normal. Once I enter password for myself (administrator) spinning takes longer than normal and doesn't log in but displays a no sign (circle w line through it) when attempting to login from guest account it takes me to screen that says that the computer will restart to a safe safari system for the guest user. I waited for a longer time and the grey denim screen comes up. By the apple in left upper corner it said I think LSA? Then safari menu bar. The page it loads to us file:///System/Installation/CDIS/Mac%2005%20X%20Utilities.app/Contents/Resource s/English.iproj/GuestLoginInfirmation.html
Can someone HELP? I'm afraid I might do something wrong

What backups do you have?

Can I use MacBook pro A1211 with external monitor, screen has died but

CCan I use MacBook pro A1211 with external monitor, screen has died but computer seems fine

Hmm seems like this model has DVI out. You could just plug a standard DVI monitor into that. Or use the DVI connector (VGA supported with included adapter; S-video and composite video supported with optional adapters) adapter that came w/ your machine.

MacBook or MacBook Pro 2015?

I am purchasing a new Mac and I Was waiting for the new MacBook to come out this Friday, but I have been reading reviews on the speed and performance of it compared to a Macbook pro 2015 model and it doesn't seem like they compare at all. I would like the new design and Intel M chip along with the other new features, but the upgraded MB pro is also appealing because of its upgrades. If the prices weren't so close I would have an easier time making a decision. Any thought? Would you go with the MacBook or MacBook Pro 2015?
thanks

No one here has ever used that macbook because it is not for sale as yet. I would recommend you to be wise enough to stay away from the new macbook if your main intentions are Video editing, photo editing, 3D graphics designing or gaming.
I am not criticising the new macbook but i am only making you aware of the potential of the new macbook. The new Macbook will suffice your needs if your intentions are like web surfing, Checking emails, social networking sites, light video watching, photo viewing, portability etc. To add up more problems, it has got only a single USB-C port which is not yet standardised with the other laptop accessories. If in case, you are running short of power and at the same time you would like to transfer some files onto your external drive, you will have to keep your USB-C adapter handy or else, you will be running around like a headless chicken (No pun intended). The new macbook is far from practical.
The stupidest integration by Apple is to put a retina display powered by a mediocre 1.1 Ghz Core M processor with an Intel HD 5300 graphics GPU...
[LONG STORY SHORT-- BUY A RETINA MACBOOK PRO AND AVOID THE NEW MACBOOK AS PRICES ARE THE SAME.]
Hope that helps.
Regards,
Granel.

The right side of the screen of my MacBook Air a yellow line appears very thin and dotted. What can I do to eliminate it?

The right side of the screen of my MacBook Air a yellow line appears very thin and dotted. What can I do to eliminate it? Marco

Reset PRAM. http://support.apple.com/kb/PH4405
If this does not help, contact Apple.
Best.

In my MacBook Pro old 2006 late model Lion 10.7.4 how achieve right click from touch pad

In my MacBook Pro old 2006 late model Lion 10.7.4 how achieve right click from touch pad?

The multigesture buttonless trackpad was introduced with the Unibody Macs that came out in Late 2008. Successive models have built upon that, adding 2, 3 and more fingers to the gestures.
Older models don't have the trackpad hardware needed to detect those motions and, hence, cannot support multigestures. Only resort is using combination of keys with the button, as disguise suggests.

What is the right charger for a MacBook Pro 13" mid 2009 model?

What is the right charger for a MacBook Pro 13" mid 2009 model? I have two chargers for two different Mac and don't know which is thankswhich. I'm really looking for specific details such as voltage/watts and all the rest to idenify my charger. A link to where to web page where I could purchase the correct charger would also be very useful. Many thanks.
All help much appreciated. THANK YOU

Both power adapter I have are different (at the magnet end) from the one in link.
Earlier adapters have T shaped connectors, which Apple later changed to the L shape, presumably to make them more abuse-proof. Either one is fine and the one you are using will not damage your Mac.
Retina MBPs and new MBAs use a completely different MagSafe 2 connector which will not fit (without an adapter).

Macbook Pro 2015 Base line model, screen tearing and scroll "lag"

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