Freezing On Startup

[Multimoss]

Hi guys,
Ever since Yosemite, my computer has been freezing on startup and it also wont shut off sometimes. It doesn't happen every time so i just switch it off and on till it runs.. I want to sort it.
Have you guys got any ideas?
Any help would be MUCH appreciated.

 

[Multimoss]

Just bumping the thread, hoping someone can help.
It's difficult to diagnose, but's become a pain in the ass and really just want ANY ideas thrown at it.
I've tried changing the Memory Multiplier from 16 to 18, put XMP Profile 1, no luck..
Would appreciate anything.
:

 

[Stevenlafarnce]

Hey i would try reinstalling the boot loader and then go from there just make a backup of your boot plst, i had to do that with mine and it worked like a charm

and try -v -f -x npic=0x2000 GraphicsEnabler=no if you card is built in then (yes)

 

[Multimoss]

Hey i would try reinstalling the boot loader and then go from there just make a backup of your boot plst, i had to do that with mine and it worked like a charm

and try -v -f -x npic=0x2000 GraphicsEnabler=no if you card is built in then (yes)

Hi
thanks for your help.
I am total noob though. What is the plist and how do i make a backup of it?
It's been a while since i did the install and have forgotten all the boxes i checked..
also, are you saying i should type these commands in every time it boots up?
Oh man, i am lost.