bought myself a new motherboard to replace my old one because of the lack of pcie. as i replace everything and hooked up the new motherboard, it would power on showing all the details and can even get to bios, but after a few seconds it turns off. i cant even get to install windows on my hd because it won't even stay on. i am pretty new at building pc's but im trying here lol. any help guys? i switched from a asus p5pe-vm mobo to a xfx 630i mobo. if you guys have any questions let me know thanks..