My mac is very slow at start up and throwing out its original boot disc, so i cant carry out any disk utility repair, any help

Hey guys, i have tried all the help i have so far been given but am still facing the same problem,
my mac is slow at start
i have tried to reboot with the os x 10.6 dvd but its just throwing it out
causing more and more frastration
can some one help

Hello,
Have you done a PRAM reset, CMD+Option+p+r...
http://support.apple.com/kb/HT1379
In fact, do 3 in a row, takes a bit of time.
Does it boot to Single User Mode, CMD+s keys at bootup, if so try...
/sbin/fsck -fy
Repeat until it shows no errors fixed.
(Space between fsck AND -fy important).
Resolve startup issues and perform disk maintenance with Disk Utility and fsck...
http://docs.info.apple.com/article.html?artnum=106214

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Hello Chris,
A variety of things could be causing the slow startup. The first place I would look is at the Login items on your MacBook to see if there are items in this list that are set to automatically start. Having applications automatically start will increase startup time. This article has the steps to do this:
Mac OS X 10.6: If items automatically open when you log in
http://support.apple.com/kb/PH6811
The steps from the article should work for Mac OS X 10.4-10.8; the only difference in Mac OS X 10.7 and 10.8 is that the Accounts icon is named Users & Groups:
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Choose Apple menu > System Preferences, and then click Accounts.
Click Login Items.
Select any items you don’t want to open automatically, and then click the "-" button.
If you are still experiencing a slow startup after that, you might want to try the steps in the following article:
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http://support.apple.com/kb/TS2570
I hope this helps!
Best,
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Take these steps when you notice the problem.
Step 1
Launch the Activity Monitor application in any of the following ways:
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Step 2
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Launch the Console application in the same way as above. Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left.
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First, back up all data immediately, as your boot drive may be failing.
If iCloud is enabled, disable it.
Disconnect all wired peripherals except keyboard, mouse, and monitor, if applicable. Launch the usual set of applications you use when you notice the problem.
Step 1
Launch the Activity Monitor 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.
☞ If you’re running OS X 10.7 or later, open LaunchPad. Click Utilities, then Activity Monitor in the page that opens.
Select the CPU tab of the Activity Monitor window.
Select All Processes from the menu in the toolbar, if not already selected.
Click the heading of the % CPU column in the process table to sort the entries by CPU usage. You may have to click it twice to get the highest value at the top. What is it, and what is the process? Also post the values for % User, % System, and % Idle at the bottom of the window.
Select the System Memory tab. What values are shown in the bottom part of the window for Page outs and Swap used?
Step 2
You must be logged in as an administrator to carry out this step.
Launch the Console application in the same way as above. Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left.
Post the 50 or so most recent messages in the log — the text, please, not a screenshot.
Important: Some personal information, such as your name, may appear in the log. Edit it out before posting.

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Thanks, Chris

Hello Chris,
A variety of things could be causing the slow startup. The first place I would look is at the Login items on your MacBook to see if there are items in this list that are set to automatically start. Having applications automatically start will increase startup time. This article has the steps to do this:
Mac OS X 10.6: If items automatically open when you log in
http://support.apple.com/kb/PH6811
The steps from the article should work for Mac OS X 10.4-10.8; the only difference in Mac OS X 10.7 and 10.8 is that the Accounts icon is named Users & Groups:
To permanently prevent items from opening at login:
Choose Apple menu > System Preferences, and then click Accounts.
Click Login Items.
Select any items you don’t want to open automatically, and then click the "-" button.
If you are still experiencing a slow startup after that, you might want to try the steps in the following article:
Mac OS X: Gray screen appears during startup
http://support.apple.com/kb/TS2570
I hope this helps!
Best,
Sheila M.

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