MacBook Cannot Boot Up - Grey Screen
The simple answer is it sounds like your operating system is totally fried. You will need to do a full erase (zero out all data and not the quick erase drive option) of your hard drive. Reinstall a legal copy of Mac OS X. This is absolutely key. It's just plain out not smart to install anything illegal. It is so easy to add key logging or any other type of malicious software into illegal copies of operating systems. Furthermore, they could easily install stuff that could grab personal data such as passwords, bank account information, or use your computer as a zombie to hide illegal activity. You could get easily screwed. Do you want that? I don't think so. Who would? Just buck up the cost and get a legal copy of OS X. It's worth every dollar and the peace of mind. 

If you can't afford Mac OS X install a stable build of Linux, but I scratch my head as to why would someone have a Mac but not run Mac OS X as their primary OS. Doesn't make sense. You might as well have a PC.