I followed any known guide and option for installing or upgrade to Mountain Lion 10.8 or 10.8.2 ,usb or dvd install too,hackintosh or retail,but everytime I boot from them after the boot loader,chimera,clover or chameleon,it restarts quickly over and over again,no matter what boot flags option I try.And all these in spite the fact I succeeded to install and run perfectly Lion 10.7.3 from Niresh on the same system.

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System specs: Desktop PC,
Nvidia GeForce 210,1GB,GDDR3,PCI-E 16x gpu,
6GB Ram(4x2GB),DDR3,1333mhz,
Ubuntu 12.10 x86_64/Windows 8 Pro x64/Mountain Lion 10.8.2,
Intel Core i3 3.1Ghz, cpu,
Gigabyte H61MA-D3V motherboard.