Weird graphic before login screen and laptop is VERY slow

Hello,
So I have an Early-2011 MacBook Pro 17". Lately (past 3 months) the computer has been slower (which is normal, it's getting older) but now it is just unbearably slow and for seemingly NO reason. I have meters on the menu bar that say there is pleny of RAM left and the processor is running at 2%-6%. I can't figure out for a single reason why this is happening, but it is EXTREMELY frustrating, since only 2.5 years ago I paid 3200$ for this computer.
Now there is a weird graphic that appears RIGHT before the login screen appears. I have attached a photo. I currently own an iPhone 5, iPad 4, iMac 20" (2008), MacBook Pro 17" (early 2011), and an iPod Touch 3rd Generation. I have had problems with almost all the products, but yet have remained a die-hard Apple fan. I'm beginning to question my affinity to Apple, because I could have purchased a 17" Windows computer for MUCH less and then just replaced it this year. Instead I thought this piece of junk would last me 6 years.... This is hardly looking like it will be the case, as I can barely do anything on it as of now.
It's an early-2011 MacBook Pro 17", with a 2.2GHz Intel Core i7 processor, 8GB of 1333MHz DDR3 RAM and a 750GB Western Digital Black hard drive running at 7200RPM.

justinjsc,
I can’t explain the weird graphic, but I can offer something to try regarding the slowdown. Boot your MacBook Pro into Recovery mode by holding down a Command key and the R key as it starts up. Once the Mac OS X Utilities menu appears, select Disk Utility. On the left-hand side of the Disk Utility window, select your internal disk’s boot partition (typically called “Macintosh HD”). On the right-hand side, press the Verify Disk button if it’s not greyed out; if it is greyed out, or if it reports that errors were found, press the Repair Disk button. Once the verification/repair is completed, exit Disk Utility and select Restart from the Apple menu to restart in normal mode. Did this make any difference?
In case the slowdown is due to a problem with your hard drive, do you make regular backups? If not, you might want to consider buying an external drive to use as a Time Machine backup destination.

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Win 7/Z580: Black screen on boot up, before login screen?

Win 7/Z580: Black screen on boot up, before login screen?
=======================================
I find some interesting posting in this forum. Thanks for keeping this forum to help windows/Lenovo community. I like to pick up the brain of this forum to resolve the black screen issue. I am not sure, whether it caused by virus. I use Microsoft Security Essentials. I am not able to run this in command prompt.
I started my laptop this morning & login screen showed up. Once I entered my login credentials, I heard the sound that usually plays once a login is successful, but I ended up with a black screen. After this occurred, I had to hold down the power button to manually shut down the computer. Once I started it up again, I was prompted to do a system repair, which eventually ended up with all successful outcomes, but I now have a black screen with a cursor before the login screen now. I have no idea what caused this to happen. My laptop is a Lenovo Ideapad Model Z580 (500 GB HD, 6GB RAM).
I am not able to get into safe mode or any other mode, which all leads to a black screen described above. I am able to use the "Repair Your computer" tools after pressing F8 during booting only . All other options leads to Black screen with cursor in the middle
Last Known Good Configuration leads to same
Enable Low Resolution Video (640x480) leads to same My Z580 is not responding to CTRL+ALT+DEL Windows Logo keys as well.
**** I tried SAFE Mode. It loaded couple of drivers and paused at CLASSPNP.SYS load. It went to Black screen with cursor at center.
I am able to invoke control pannel from Command prompt of working PC by typing control.
Z580 PC is not responding to control from command prompt (under Repair Your computer) either.
Z580 is able to use the "Repair Your computer" tools after pressing F8 during booting .
Under local user login it provided Start Repair option. As I pick this option, I got the following. Problem signature
Startup repair offline
1 - 6.1.7600.16385
2 -
6.1.7600.16385
3 - unknown
4 - 21200332
5 - autofailover
6 -
4
7 - NoRootCause
os v - 6.1.7600.2.1.0.2561
locale id – 1033
Under Admin user login, it provided system recovery options. It is not picking up the recovery point created a while ago.
Windows Memory Diagnostics is not launching and shows a black screen without cursor.
I am able to get into command prompt. I tried the following there.
I am not able to run cmd as admin
I reviewed the past posting of this forum on this subject.
Windows 7 boots to an unresponsive black screen with mouse cursor...
System File Checker: Run sfc /scannow & analyze its logs in Windows 7 / 8
Windows Resource Protection could not start the repair service
How to analyze the log file entries that the Microsoft Windows Resource Checker (SFC.exe) program generates in Windows Vista
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Windows Resource Protection found corrupt files but was unable to fix some of them
SFC /SCANNOW showed up
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I did "net start trustedinstaller"
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I ran repair options using sfc /scannow /offbootdir=x:\ /offwindir=D:\windows
and got "Windows Resource Protection found corrupt files but was unable to fix some of them "
I did findstr /c:"[SR]" %windir%\logs\cbs\cbs.log >sfcdetails.txt I will be glad to attach the zip file that contain CBS.LOG & [SR] tag extract (xxx.txt).
I did not any find ERRORS there, SFC ended with message saying "found corrupt files but was unable to fix some of them" . It is misleading. There is no [SR] tag pointing to corrupt files. Does SFC through false positive like this?
I ran chkdsk. ResultsFile verification completed.
0 bad file records processed.
0 EA records processed.
CHKDSK is verifying indexes (stage 2 of 5)...
Index verification completed.
0 unindexed files scanned.
0 unindexed files recovered.
Windows has checked the file system and found no problems.
0 KB in bad sectors.
Failed to transfer logged messages to the event log with status 50.
It is puzzling me.
Thanks for helping.

I tried these steps 8/7/2015. I ran chkdsk. Results for D:\
File verification completed.
0 bad file records processed.
0 EA records processed.
CHKDSK is verifying indexes (stage 2 of 5)...
Index verification completed.
0 unindexed files scanned.
0 unindexed files recovered.
Windows has checked the file system and found no problems.
0 KB in bad sectors.
Failed to transfer logged messages to the event log with status 50.
Updated on 8/7
============
Here are my HDD config:
Volume ### Ltr Label Fs Type Status Info
Volume 0 F WDO_Media64 UDF DVD- Healthy
Volume 1 C NTFS Partition Healthy
Volume 2 D Windows7_OS NTFS Partition Healthy
Volume 3 E LENOVO NTFS Partition Healthy
Volume 4 G FAT Removable Healthy
Volume 5 LENOVO_PART NTFS Partition Healthy Hidden
I ran CHKDSK /F /X for C, D, E. All resluted to "Windows has checked the file system and found no problems."
F8 ===> Repair Computer===> Command Prompt ===> Works OK
F8 ===> Repair Computer===> Start up Repair ==> Results into "Startup repair could not detect a problem"
F8 ===> Repair Computer===> System Restore ===> "No restore points has been created on yout computer system drive"
F8 ===> Repair Computer===> System Image Recovery ===> "Windows cannot find a system impage on this computer"
F8 ===> Repair Computer===> windows Memory Diagnostiyics ===> "Black screen with Cursor in the middle"
After getting into Command prompt
I run net user
User accounts for \\
Administrator Guest
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- Restore to a prior date (System Restore) - System Restore ====> Already reported in previous reply
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Clean Start up
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Enter the password for administrator:
Attempting to start msconfig as user "MININT-84TH5FG\administrator" ...
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1060: The specified service does not exist as an installed service.
- Try loading defaults in BIOS - F2 ==> f9 ==> f10 ===> Black screen with cursor in the middle
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Reverts back to dark gray login screen and will not allow me to login

HI!
SPECS
Retina 15in.
16gb of memory
500 gb ssd.
OS - Mavericks
PROBLEM
I can boot up and login to my laptop - no problem. I have my login set up so that my user name appears and all I have to do is type my password.
The problem is when I try to wake my computer or disconnect it from my thunderbolt display. Sometimes, (more frequently as of late) when I wake my computer or disconnect it from my thunderbolt display my computer will revert back to a dark gray login screen and prompt me to put in my user name and password (First of all the login screen that comes up is different than the one that comes up when i boot up the laptop because it requests me to type in my user name). - once I type in my user name and password it will not let me log in. It will clear both the username and password fields and sit at this screen. At this point I am forced to restart my laptop and log back in. I never have any problems restarting and loging in right after booting up.
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First try a Reset ( No Data will be Lost )
Press and hold the Sleep/Wake button and the Home button at the same time for at least Ten seconds... (But can take Longer)... until the Apple logo appears. Release the Buttons
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1: Connect the device to Your computer and open iTunes.
2: If the device appears in iTunes, select and click Restore on the Summary pane.
Restoring > http://support.apple.com/kb/HT1414
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Change your Apple ID to the new email address that you want to use. You'll need to verify the email address.
Return to Settings > iCloud and sign in with your new Apple ID.
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Weird graphic before login screen and laptop is VERY slow

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