Went to Power Mac SM annex to reinstall the OS (Mountain Lion 10.8), they said it's obsolete and they don't support it, they can reinstall it with a new OS (Yosimite) but no guarantee it will work. Whether it will work or not I have to pay 3000 pesos. I went home to think about it first and consult my boss who lend me the mac book. After one day I decided to proceed with the installation of newer OS, but the new staff told me it 's not possible as the Yosimite cannot be supported by my Macbook. I was almost arguing with the guy because the other staff the other day told me it is possible. I even told the guy to prove him wrong if can search online. Went back home and saw it's possible. https://www.apple.com/asia/support/osx/upgrade/. So disappointed, i went there twice coming from montalban for nothing.