I've recently update to Yosemite, ever since my Mac won't boot up from the grey screen

ive recently update to Yosemite, ever since my Mac won't boot up from the grey screen, I've checked on the utilities and disk can not be repaired. I'm gutted is it dead?.........how can I solve this......help please
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Did you mean Command + Option + R for internet recovery?
The only key commands I know that involve P is a PRAM reset:
https://support.apple.com/kb/PH11243?viewlocale=en_US&locale=en_US
Or maybe I am missing or misunderstanding something?

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How come my Mac read my Ram as 24 GB when I installed four 8 GB RAM into my system and booted through safe boot, since my Mac won't boot normally with the new Ram, but will only boot if I add the two 2GB with two 8GB?

Oh and I'm using Kingston RAM too this one: http://www.amazon.com/gp/product/B007TGZ4UY/ref=oh_details_o00_s00_i00?ie=UTF8&p sc=1

Macs are extremely sensitive to their ram...even when memory paging is not used, the memory modules still have to be very close in their timing and latency and other specifications. That is why John and Michel and Mike and Mende and I all gave you the same advice, advice based on years of experience. There are a couple memory suppliers who are Mac specialists, know Macs, and test their products to see that they perform correctly in Macs. The two best are OWC and Crucial, plenty of links given above.
We all have said the same thing with regard to other brands, they are not reliable and are regular sources of problems encountered on here. It is very unusual to have positive feedback from users buying ram from Amazon or eBay...we see pretty much a 100% failutre rate from users doing that.
Listen to our advice, get the amount of ram supported by your iMac, from a reliable source. There isn't much else we can tell you as the memory you now have is not working.

IPad, recently updated to 5.0.1, now keeps jumping out of Safari to the icon screen

I just recently updated my iPad to software version 5.0.1 and ever since it periodically jumps out of a Safari page to an icon screen. Very frustrating!. When I synced it it also copied two copies of some videos which filled the iPad storage. I thought the full storage might have had someting to do with it but the problem continues after deleting the duplicate videos. I currently have 5.2 GB free space (28.5 GB used). When I updated the iPad software I also took the option of backing up to the iCloud. The initial iCloud storage is now getting close to full.

Try a few things:
First, try double tapping the home button. You should see a row of apps at the bottom; these are your recenty opened apps. Hold your finger down on any of the icons until they start to shake, and a red minus() appears. Tap the red minus for each app. This will close the app, not delete it. If you have too many apps open, this can cause crashes.
If it still crashes, try the basic troubleshooting steps here:
Basic Troubleshooting Steps for iOS
(Note that I am a representative of the organization for the above link, which is not endorsed by Apple)

I recently updated to Yosemite and now my email won't send my emails...Can anyone help?

I just updated my OS to Yosemite and now my email will receive emails but I cannot send any. Suggestions anyone?

Verify the configuration for sending mail - SMTP server address and your server password. If they are correct, but you still cannot send email, then delete your mail account and re-create anew.

I cannot send email on my iMac from Mac Mail. The account shows that it is offline. I've recently updated to Yosemite. I can, however, receive email. What can I do to fix this problem?

I cannot send email on my iMac. I have recently updated to Yosemite. I don't know if that is the problem or not. However, I can receive email on all of my email accounts, but cannot send. It shows that my accounts are offline. How do I fix this?

Have you received any tips on how to fix the problem yet?

I have a i ohone 4. I recently updated to iOS5. Since then my phones messgae tone gets stuck and rings weird. Anybody facing same issue?

I have a i ohone 4. I recently updated to iOS5. Since then my phones messgae tone gets stuck and rings weird. Anybody facing same issue?

I am not having that issue. Try a hard reset on the phone. Hold down the power button and the home button at the ame time until you see the apple logo

Since upgrading my mid-2010 MacBook Pro from the original Snow Leopard to Yosemite 10.10.2 there have been multiple instances of restart (crash) also slow operation. Any suggestions?

Since upgrading my mid-2010 MacBook Pro from the original Snow Leopard to Yosemite 10.10.2 there have been multiple instances of restart (crash) also slow operation & pop up message stating web content has failed. Any suggestions?

Many thanks for your interest, I've downloaded & run the app as suggested, report copies & pasted below.
Problem description:
Following upgrade from Snow Leopard to Yosemite 10.10.2 machine is slower & suffers from shut down / reboot and closing web pages due to unexpected error
EtreCheck version: 2.1.8 (121)
Report generated 6 February 2015 08:40:29 GMT
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 (15-inch, Mid 2010) (Technical Specifications)
    MacBook Pro - model: MacBookPro6,2
    1 2.4 GHz Intel Core i5 CPU: 2-core
    4 GB RAM Upgradeable
        BANK 0/DIMM0
            2 GB DDR3 1067 MHz ok
        BANK 1/DIMM0
            2 GB DDR3 1067 MHz ok
    Bluetooth: Old - Handoff/Airdrop2 not supported
    Wireless: en1: 802.11 a/b/g/n
    Battery Health: Normal - Cycle count 75
Video Information: ℹ️
    Intel HD Graphics - VRAM: 288 MB
        Color LCD 1440 x 900
    NVIDIA GeForce GT 330M - VRAM: 256 MB
System Software: ℹ️
    OS X 10.10.2 (14C109) - Time since boot: 0:13:14
Disk Information: ℹ️
    Hitachi HTS545032B9SA02 disk0 : (320.07 GB)
        EFI (disk0s1) <not mounted> : 210 MB
        Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
        Macintosh HD (disk1) / : 318.84 GB (134.68 GB free)
            Core Storage: disk0s2 319.21 GB Online
    MATSHITADVD-R   UJ-898
USB Information: ℹ️
    BUFFALO HD-PVU2 500.11 GB
        EFI (disk2s1) <not mounted> : 210 MB
        Time Machine Backups (disk2s2) /Volumes/Time Machine Backups : 499.76 GB (257.33 GB free)
    Apple Internal Memory Card Reader
    Apple Inc. BRCM2070 Hub
        Apple Inc. Bluetooth USB Host Controller
    Apple Inc. Apple Internal Keyboard / Trackpad
    Apple Computer, Inc. IR Receiver
    Apple Inc. Built-in iSight
Gatekeeper: ℹ️
    Mac App Store and identified developers
Kernel Extensions: ℹ️
        /System/Library/Extensions
    [not loaded]    jp.co.buffalo.driver.turbousbhdd (1.0.0) [Click for support]
Launch Agents: ℹ️
    [loaded]    com.hp.help.tocgenerator.plist [Click for support]
Launch Daemons: ℹ️
    [loaded]    com.adobe.fpsaud.plist [Click for support]
User Launch Agents: ℹ️
    [loaded]    com.google.keystone.agent.plist [Click for support]
User Login Items: ℹ️
    Skype    UNKNOWN (missing value)
    Safari    Application (/Applications/Safari.app)
    Dropbox    Application (/Applications/Dropbox.app)
    Android File Transfer Agent    Application (/Users/[redacted]/Library/Application Support/Google/Android File Transfer/Android File Transfer Agent.app)
    ConnectService    Application (/Library/Application Support/ArcSoft/Connect Service/ConnectService.app)
Internet Plug-ins: ℹ️
    Flip4Mac WMV Plugin: Version: 2.4.4.2 [Click for support]
    FlashPlayer-10.6: Version: 16.0.0.305 - SDK 10.6 [Click for support]
    QuickTime Plugin: Version: 7.7.3
    Flash Player: Version: 16.0.0.305 - SDK 10.6 [Click for support]
    Default Browser: Version: 600 - SDK 10.10
    Google Earth Web Plug-in: Version: 7.1 [Click for support]
    Silverlight: Version: 4.0.60129.0 [Click for support]
    iPhotoPhotocast: Version: 7.0
User internet Plug-ins: ℹ️
    CitrixOnlineWebDeploymentPlugin: Version: 1.0.105 [Click for support]
3rd Party Preference Panes: ℹ️
    Flash Player [Click for support]
    Flip4Mac WMV [Click for support]
Time Machine: ℹ️
    Skip System Files: NO
    Auto backup: YES
    Volumes being backed up:
        Macintosh HD: Disk size: 318.84 GB Disk used: 184.16 GB
    Destinations:
        Time Machine Backups [Local]
        Total size: 499.76 GB
        Total number of backups: 184
        Oldest backup: 2010-12-10 15:37:39 +0000
        Last backup: 2015-02-06 02:49:24 +0000
        Size of backup disk: Too small
            Backup size 499.76 GB < (Disk used 184.16 GB X 3)
Top Processes by CPU: ℹ️
         5%    WindowServer
         1%    ConnectService
         1%    Skype
         0%    systemstatsd
         0%    launchd
Top Processes by Memory: ℹ️
    193 MB    Skype
    168 MB    mds_stores
    132 MB    com.apple.WebKit.WebContent
    107 MB    Mail
    99 MB    ocspd
Virtual Memory Information: ℹ️
    889 MB    Free RAM
    1.99 GB    Active RAM
    455 MB    Inactive RAM
    825 MB    Wired RAM
    1.11 GB    Page-ins
    0 B    Page-outs
Diagnostics Information: ℹ️
    Feb 6, 2015, 08:27:32 AM    /Library/Logs/DiagnosticReports/com.apple.AmbientDisplayAgent_2015-02-06-082732 _[redacted].crash
    Feb 6, 2015, 08:25:19 AM    Self test - passed
    Feb 5, 2015, 04:37:08 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-05-163708_[redacted].crash
    Feb 5, 2015, 10:01:02 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-05-100102_[redacted].crash
    Feb 5, 2015, 12:03:59 AM    /Library/Logs/DiagnosticReports/HP Scan_2015-02-05-000359_[redacted].cpu_resource.diag [Click for details]
    Feb 4, 2015, 11:58:58 PM    /Library/Logs/DiagnosticReports/HP Scan_2015-02-04-235858_[redacted].cpu_resource.diag [Click for details]
    Feb 4, 2015, 11:54:35 PM    /Library/Logs/DiagnosticReports/HP Scan_2015-02-04-235435_[redacted].cpu_resource.diag [Click for details]
    Feb 4, 2015, 11:49:03 PM    /Library/Logs/DiagnosticReports/HP Scan_2015-02-04-234903_[redacted].cpu_resource.diag [Click for details]
    Feb 4, 2015, 09:40:16 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-04-214016_[redacted].crash
    Feb 4, 2015, 09:38:12 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-04-213812_[redacted].crash
    Feb 4, 2015, 09:27:56 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-04-212756_[redacted].crash
    Feb 4, 2015, 09:25:25 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-04-212525_[redacted].crash
    Feb 4, 2015, 09:20:16 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-04-212016_[redacted].crash
    Feb 4, 2015, 09:18:10 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-04-211810_[redacted].crash
    Feb 4, 2015, 09:12:54 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-04-211254_[redacted].crash
    Feb 4, 2015, 08:40:48 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-04-204048_[redacted].crash
    Feb 4, 2015, 08:22:04 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-04-202204_[redacted].crash
    Feb 4, 2015, 12:11:35 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-04-001135_[redacted].crash
    Feb 3, 2015, 09:44:33 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-03-214433_[redacted].crash
    Feb 3, 2015, 05:40:21 PM    /Library/Logs/DiagnosticReports/HP Scan_2015-02-03-174021_[redacted].cpu_resource.diag [Click for details]
    Feb 3, 2015, 09:05:45 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-03-090545_[redacted].crash
    Jan 28, 2015, 06:10:42 PM    /Library/Logs/DiagnosticReports/Kernel_2015-01-28-181042_[redacted].panic [Click for details]
    Jan 21, 2015, 10:51:25 PM    /Library/Logs/DiagnosticReports/Kernel_2015-01-21-225125_[redacted].panic [Click for details]
    Jan 20, 2015, 11:12:47 AM    /Library/Logs/DiagnosticReports/Kernel_2015-01-20-111247_[redacted].panic [Click for details]
    Jan 18, 2015, 09:57:31 AM    /Library/Logs/DiagnosticReports/Kernel_2015-01-18-095731_[redacted].panic [Click for details]
The only observations are that the backup drive is deemed too small and the quite long list of diagnostic reports dated between Jan 18, 2015 (which I believe is the day I upgraded to Yosemite) & today the latest Yosemite update was installed on Jan 28, 2015
Any further assistance will be appreciated

I recently updated my macbook, i don't know if that has any effect to my recent problem, but when i try to download and save .mp3 files from the internet, like i have done in the past, it downloads but not as an mp3 file, its "blank"

i recently updated my macbook, i don't know if that has any effect to my recent problem, but when i try to download and save .mp3 files from the internet, like i have done in the past, it downloads but not as an mp3 file, its "blank" and when i try to open it, i can't? I NEED HELP !

Here is the download page

So when I installed the most recent updates for microsoft office 2011 for mac, my ical info disappeared. Still have the info on my Office calendar but it's no longer on ical. It's also been removed from my phone. How can I get outlook to sync with ical

When I installed the recent updates for Microsoft Office 2011 for Mac, my iCal calendar was wiped out, as was the calendar on my iPhone. I'd rather use iCal than Office and was attempting to phase Office out altogether. Now, all of my information is on the Office calendar but not iCal. The iCloud version of my iCal calendar is not up to date. In any event, I couldn't figure out how to send that info to the iCal on my mac or my phone. How can I sync my Office calendar info to iCal? If that's not possible, how can I get my Office calendar to sync with my iPhone? All of my sync services are set up in iTunes and on my phone. This happened to me once before and I spent hours on the phone with Apple and on the web trying to work it out. I NEED MY CALENDAR!!!! PLEASE HELP!!!!!

As that's not an Apple product, you may get more help by using Microsoft's Office for Mac forums:
Office for Mac forums
The other concern I have is that Office 2011 requires an Intel-based Mac and you posted in the older iMac (pre-Intel or "PPC") forums. If you have an Intel-based iMac (Apple menu > About this Mac..." will say "Intel" if you do) then I think you'll get faster and more accurate ansers to other questiosn in the Apple forums for newer iMacs here:
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I am running Windows 7 (64bit) , and an error message appears following a recent update to iTunes v 11.1.2: "iTunes could not connect to the iTunes store. An unknown error occured (-3212). Make sure your network connection is active and try again." help!

I am running Windows 7 (64bit) , and an error message appears following a recent update to iTunes v 11.1.2: "iTunes could not connect to the iTunes store. An unknown error occured (-3212). Make sure your network connection is active and try again." I have dug a little bit into possible problems but haven't found a solution yet, one note is that the network connection is OK. A response would be highly appreciated! Thanks in advance.

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If you are having an issue connecting to the iTunes Store, you may find the following article helpful:
Apple Support: Can't connect to the iTunes Store
http://support.apple.com/kb/ts1368
Regards,
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Help! Just did the Update (ML 10.8.4) after receiving a new HD since mine crashed last week and the shop didn't update it back to Mavricks which I had previously done...and now my Mac won't let me past the log in screen even with correct password entered. It just spins like I'm logging in and then goes back to the user log in screen. I did the process where I restarted and pressed control S and created a new user and password, but once created same issue and can't get passed that screen.
Super frustrated and any help is appreciated!

I have decided to dedicate this thread to the wonderful errors of Lion OSX. Each time I find a huge problem with Lion I will make note of it here.
Today I discovered a new treasure of doggie poop in Lion. No Save As......
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So about 20 minutes of my time were wasted while doing my homework and studying for an exam because I had to look up "how to save a file with a new extension in mac Lion" and then wasted time sitting here and ranting on this forum until someone over at Apple wakes up from their OSX-coma.
are you freaking kidding me Apple? I mean REALLY?!!!! who the heck designed this?!!! I want to know. I want his or her name and I want to sit down with them and have a long chat. and then I'd probably splash cold water on their face to wake them up.
I am starting to believe that Apple is Satan.

After I updated to yosemite my iMovie will not open. I have found the folders in the applications for both versions 9 and 10 but neither one opens when I double click on the icon. How do I remedy this?

After I updated to yosemite my iMovie will not open. I have found the folders in the applications folder for both versions 9 and 10 but neither one opens when I double click on the icon. How do I remedy this?

Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
The title of the Console window should be All Messages. If it isn't, select
SYSTEM LOG QUERIES ▹ All Messages
from the log list on the left. If you don't see that list, select
View ▹ Show Log List
from the menu bar at the top of the screen. Click the Clear Display icon in the toolbar. Then take one of the actions that you're having trouble with. Select any messages that appear in the Console window. Copy them to the Clipboard by pressing the key combination command-C. Paste into a reply to this message by pressing command-V.
The log contains a vast amount of information, almost all of which is irrelevant to solving any particular problem. When posting a log extract, be selective. A few dozen lines are almost always more than enough.
Please don't indiscriminately dump thousands of lines from the log into this discussion.
Please don't post screenshots of log messages—post the text.
Some private information, such as your name, may appear in the log. Anonymize before posting.

I recently updated my iphone software and now I can't upload photos from iphone to mac computer. Help please.

I recently updated my iphone software and now I can't upload photos from iphone to mac computer. Help please.

The following link has 2 methods for importing photos to a Mac (not counting Photo Stream). Are you using iPhoto or Image Capture? If you follow the steps in the link for that method, what exactly happens that doesn't allow the upload? iOS: Import personal photos and videos from iOS devices to your computer

My internet continually disconnects. When I added my airport express, I had to call Verizon (my provider) and have them "bridge" my modem. Ever since, my connection constantly disconnects and puts up the message "Could not find a PPPoE server".

My internet continually disconnects. When I added my airport express, I had to call Verizon (my provider) and have them "bridge" my modem. Ever since, my connection constantly disconnects and puts up the message "Could not find a PPPoE server".
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You should restore your modem to router condition and set the Airport Express to 'Bridge Mode'. A full explanation and the method of doing this is here:
http://www.wilmut.webspace.virginmedia.com/notes/airport.html

Recently updated my iphone 4s software. now it won't sync w/ itunes, says i need updated itunes. i updated itunes... now it says that my desktop software is old and can't run new itunes. Yet, i cant update my computer either. PLEASE HELP!!!! UGHH

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Why can't you update your computer operating system ("desktop software")? What software would that be?

I've recently update to Yosemite, ever since my Mac won't boot up from the grey screen

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