A white screen when starting up my IMac because of Vista???

[OneFatality]

I have a big problem, i will try to explain it with as much detail as possible.

Problem:
So i started up Boot Camp and i after all the steps i start the instalation of Windows Vista 32bit SP2 (I got it from a friend, doesnt look official so i hope thats not the problem) and around 10% with expanding files a message pops up and says this CD may not have all the installation materials needed or may be curropt etc.

so i pressed esc. and then another window poped up and it asked me if i was sure if i wanted to cancel the instalation and i clicked yes.

Then my screen turns black (restart i think) then my computer starts up again with a white screen, i leave it on for about 15sec and then it goes black and it makes a message saying:

Press any key to boot from CD or DVD.....
BOOTMGR is missing
Press Ctrl+Alt+Del to restart

I did both the options it says. Any key and the instaltion starts all over again
and ctrl alt delete doesnt work.

Things i tried:

I tried to restart my computer while holding eject button.
Restart + holding option(to select my side i want to use, windows or mac, if the bootcamp worked)
Restart + option + eject
Held down the Start-up button until i heard a loud noise.

Nothing worked....

How could i fix this?

Thanks

 

[OneFatality]

Well i found out that this problem is called the White Screen of Death i believe.
Man going to take a long time to fix my mac....