Hellow everyone.I own a compaq presario cq3230d with 1gb ddr3 ram and windows 7 h.p 32 bit.. I've planned to upgrade its ram up to 3 gb by buying 1 ddr3 kingston 2gb module but when i add the new slot my pc wont boot and just hanging up at start screen. Then i brought another ram from different manufracture and the problem still same.. This is my pc spec http://h10025.www1.hp.com/ewfrf/wc/document?docname=c02001599&cc=us&dlc=en&lc=en&product=4091718#N35. Please give me kind guide and if can please send a link to update its bios. THX