My macbook constantly freezes randomly? please help!!!!!!!!!!!

Question

I have tried virtually everything I could. Repairing disk utility, resetting PRAM. Whenever the freeze happens all I can do is resort to forcefully shutting it down. To be more detailed, at startup I ussually hear my macbook getting louder than ussual. I even erased everything I had on the disk and It would still freeze randomly. (of course I backed everything up) I am at a loss at what to do I even struggle with connecting to the internet on it. Would upgrading to os lion resolve this?

Answer 1

Upgrading will not help. First you must resolve the cause of the problem. Since you have a current backup do the following:
Drive Preparation
1.  Boot from your OS X Installer Disc. After the installer loads select your language and click on the Continue button.  When the menu bar appears select Disk Utility from the Utilities menu.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area.  If it does not say "Verified" then the drive is failing or has failed and will need replacing.  SMART info will not be reported  on external drives. Otherwise, click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID (for Intel Macs) or APM (for PPC Macs) then click on the OK button. Click on the Partition button and wait until the process has completed.
4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
5. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.
6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.
When the process has completed do a fresh install of OS X. Before you restore anything from your backup check out the new system to be sure you no longer have problems. If you continue having problems then most likely there's a hardware issue. You may have defective or marginal RAM. You could try removing the RAM, clean the contacts on the edge card using a clean pencil eraser. Then reseat the RAM.
You can also try Intel-based Macs: Resetting the System Management Controller (SMC)