I installed Yosemite and now my computer is slow when logging in. Also when I type my password the screen images are distorted. After that my home screen appears and everything seems normal. What can I do to fix this?

I installed Yosemite and now my computer is slow when logging in. Also when I type my password, a bar appears measuring the process and then all of a sudden the screen images are distorted. After that my home screen appears and everything seems normal. What can I do to fix this?
Here is what the etrecheck results are:
Problem description:
slow at start up, screen is distorted while logging in, it is fine after
EtreCheck version: 2.1.8 (121)
Report generated April 5, 2015 at 9:42:01 AM PDT
Download EtreCheck from http://etresoft.com/etrecheck
Click the [Click for support] links for help with non-Apple products.
Click the [Click for details] links for more information about that line.
Hardware Information: ℹ️
    MacBook Pro (13-inch, Early 2011) (Technical Specifications)
    MacBook Pro - model: MacBookPro8,1
    1 2.3 GHz Intel Core i5 CPU: 2-core
    4 GB RAM Upgradeable
        BANK 0/DIMM0
            2 GB DDR3 1333 MHz ok
        BANK 1/DIMM0
            2 GB DDR3 1333 MHz ok
    Bluetooth: Old - Handoff/Airdrop2 not supported
    Wireless:  en1: 802.11 a/b/g/n
    Battery Health: Normal - Cycle count 297
Video Information: ℹ️
    Intel HD Graphics 3000 - VRAM: 384 MB
        Color LCD 1280 x 800
System Software: ℹ️
    OS X 10.10.2 (14C109) - Time since boot: 0:7:0
Disk Information: ℹ️
    Hitachi HTS545032B9A302 disk0 : (320.07 GB)
        EFI (disk0s1) <not mounted> : 210 MB
        Recovery HD (disk0s3) <not mounted>  [Recovery]: 650 MB
        Macintosh HD (disk1) / : 318.84 GB (174.85 GB free)
            Encrypted AES-XTS Unlocked
            Core Storage: disk0s2 319.21 GB Online
    MATSHITADVD-R   UJ-898
USB Information: ℹ️
    Apple Inc. Apple Internal Keyboard / Trackpad
    Apple Inc. BRCM2070 Hub
        Apple Inc. Bluetooth USB Host Controller
    Apple Inc. FaceTime HD Camera (Built-in)
    Apple Computer, Inc. IR Receiver
Thunderbolt Information: ℹ️
    Apple Inc. thunderbolt_bus
Gatekeeper: ℹ️
    Mac App Store and identified developers
Kernel Extensions: ℹ️
        /System/Library/Extensions
    [not loaded]    com.devguru.driver.SamsungComposite (1.1.0) [Click for support]
    [not loaded]    com.logmein.driver.LogMeInSoundDriver (1.0.3 - SDK 10.5) [Click for support]
        /System/Library/Extensions/ssuddrv.kext/Contents/PlugIns
    [not loaded]    com.devguru.driver.SamsungACMControl (1.1.0) [Click for support]
    [not loaded]    com.devguru.driver.SamsungACMData (1.1.0) [Click for support]
Startup Items: ℹ️
    HP Trap Monitor: Path: /Library/StartupItems/HP Trap Monitor
    Startup items are obsolete in OS X Yosemite
Problem System Launch Daemons: ℹ️
    [failed]    com.apple.ucupdate.plist
    [failed]    com.apple.watchdogd.plist [Click for details]
Launch Agents: ℹ️
    [not loaded]    com.google.keystone.agent.plist [Click for support]
    [not loaded]    com.hp.help.tocgenerator.plist [Click for support]
    [not loaded]    com.logmein.LMILaunchAgentFixer.plist [Click for support]
    [not loaded]    com.logmein.logmeingui.plist [Click for support]
    [not loaded]    com.logmein.logmeinguiagent.plist [Click for support]
    [not loaded]    com.logmein.logmeinguiagentatlogin.plist [Click for support]
Launch Daemons: ℹ️
    [not loaded]    com.adobe.fpsaud.plist [Click for support]
    [not loaded]    com.google.keystone.daemon.plist [Click for support]
    [not loaded]    com.logmein.logmeinblanker.plist [Click for support]
    [not loaded]    com.logmein.logmeinserver.plist [Click for support]
    [not loaded]    com.logmein.raupdate.plist [Click for support]
    [not loaded]    com.microsoft.office.licensing.helper.plist [Click for support]
User Launch Agents: ℹ️
    [not loaded]    com.adobe.ARM.[...].plist [Click for support]
    [not loaded]    com.facebook.videochat.[redacted].plist [Click for support]
    [not loaded]    com.google.GoogleContactSyncAgent.plist [Click for support]
User Login Items: ℹ️
    iTunesHelper    UNKNOWN Hidden (missing value)
    AdobeResourceSynchronizer    Application Hidden (/Applications/Adobe Reader.app/Contents/Support/AdobeResourceSynchronizer.app)
    Android File Transfer Agent    Application  (/Users/[redacted]/Library/Application Support/Google/Android File Transfer/Android File Transfer Agent.app)
    HP Product Research    Application  (/Library/Application Support/Hewlett-Packard/Customer Participation/HP Product Research.app)
    HPEventHandler    Application  (/Library/Printers/hp/hpio/HPEventHandler.app)
Internet Plug-ins: ℹ️
    o1dbrowserplugin: Version: 5.40.2.0 - SDK 10.8 [Click for support]
    LogMeInSafari64: Version: 1.0.660 [Click for support]
    Default Browser: Version: 600 - SDK 10.10
    Silverlight: Version: 5.1.10411.0 - SDK 10.6 [Click for support]
    FlashPlayer-10.6: Version: 17.0.0.134 - SDK 10.6 [Click for support]
    LogMeIn: Version: 1.0.660 [Click for support]
    Flash Player: Version: 17.0.0.134 - SDK 10.6 [Click for support]
    LogMeInSafari32: Version: 1.0.660 [Click for support]
    QuickTime Plugin: Version: 7.7.3
    googletalkbrowserplugin: Version: 5.40.2.0 - SDK 10.8 [Click for support]
    AdobePDFViewer: Version: 10.0.1 [Click for support]
    SharePointBrowserPlugin: Version: 14.1.0 [Click for support]
    iPhotoPhotocast: Version: 7.0 - SDK 10.7
3rd Party Preference Panes: ℹ️
    Flash Player  [Click for support]
Time Machine: ℹ️
    Time Machine not configured!
Top Processes by CPU: ℹ️
         7%    ocspd
         4%    WindowServer
         1%    kextd
         0%    ps
         0%    securityd
Top Processes by Memory: ℹ️
    137 MB    Microsoft Word
    120 MB    Safari
    86 MB    ocspd
    82 MB    CalendarAgent
    77 MB    WindowServer
Virtual Memory Information: ℹ️
    310 MB    Free RAM
    1.89 GB    Active RAM
    1.55 GB    Inactive RAM
    544 MB    Wired RAM
    1.13 GB    Page-ins
    8 KB    Page-outs
Diagnostics Information: ℹ️
    Apr 5, 2015, 09:32:47 AM    Self test - passed
    Apr 5, 2015, 09:30:05 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/AdobeResourceSynchronizer_2015 -04-05-093005_[redacted].crash
    Apr 4, 2015, 01:12:41 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/AdobeResourceSynchronizer_2015 -04-04-131241_[redacted].crash
    Apr 4, 2015, 08:13:57 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/AdobeResourceSynchronizer_2015 -04-04-081357_[redacted].crash

Reinstalling OS X Without Erasing the Drive
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Reinstalling OS X Without Erasing the Drive
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility and press the Continue button. After Disk Utility loads select the Macintosh HD entry from the the left side list.  Click on the First Aid tab, then click on the Repair Disk button. If Disk Utility 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 Disk Utility and return to the main menu.
Reinstall OS X: Select Reinstall OS X and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.
Alternatively, see:
Reinstall OS X Without Erasing the Drive
Choose the version you have installed now:
OS X Yosemite- Reinstall OS X
OS X Mavericks- Reinstall OS X
OS X Mountain Lion- Reinstall OS X
OS X Lion- Reinstall Mac OS X
     Note: You will need an active Internet connection. I suggest using Ethernet
                 if possible because it is three times faster than wireless.

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