Fedora 18 Freezing and Black Screen before install

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http://forums.fedoraforum.org – Hello im kinda getting frustrated with my custom desktop.....im trying to install fedora 18 on it. I burned the .iso to a flash drive and i tested it with my laptop which i am using to type this with..and it runs fine but when i try to use the flash drive it loads saying Start Fedora and a few other things then i click Start Fedora then the screen goes white with a flashing underscore then just goes black......please help im starting to regret going to linux ;( (HowTos)