macbook freezes on startup cant click or run programs

my macbook loads but i cant click on anything. i held down shift and went into safe mode and it does the same thing.. it seems there is a program that is hung from the startup.. i have went thru a bunch of things to try but someone told me I could try using unix commands change the startup and remove items and then see if i can get it to boot correctly. can anyone give me some tips on how to do this.. i held command + s and got into the unix command line.. but thats as far as i can get before it gets confusing.. any help greatly appreaciated.. need to get this fixed before the weekend.. thanks..

 

Resolve startup issues and perform disk maintenance with Disk Utility and fsck

 

thanks for the link.. i already tried fsck and it says everything is fine.. i believe a program is starting up which i need to disable from startup.. i tried to use disk utility but when i start the macbook with the os disc installed i hold c and it starts up but ejects the os disc.. any other info greatly appreaciated..

 

can anyone give me some guidance on how to edit startup items from command line.. i did fsck - fy and it checked volume doesnt seem to be anything wrong with that.. i think its something during startup..

 

i figured it out after much research.. the trackpad is messed up.. i got it to boot once with a usb mouse hooked up which i did before and this time was able to click on stuff.. uninstalled a few programs from startup.. etc.. but as soon as i clicked the trackpad it messed up again.. i rebooted.. usb mouse was working.. tried it again.. touched trackpad.. again locked out of clicking on either trackpad or mouse.. gonna see if its under warranty.. a lot of people having same issue.. i just thought was software issue not hardware.. thx guys

 

wow that's weird. still under warranty, I hope. good luck!