Deus Aquila :
Well in my experience league of legends its a very easy game to run, you could play on mid settings to be on the safe side, your cpu seems decent, at least for league and web browser games, but Im not sure if it will bottleneck a GTX650, about the issues you mention, why cant you play the games you mention? Do they crash or you cant install them? did you change the operating system or what do you mean by "format"?
well ill just buy 2gb ram and ill try if gtx650...
we reformat "boot"...? it, I install the games then i cant play it, also the browser game and facebook games like candy crush, i install plugins like adobe shockwave player, and other flash player, but its not working...
and also i cant instal direct3d...
my cpu has too many problems... hehehe