I have a Q-tec 400W PSU, and running 1 120GB seagate sata harddrive, and 1 DVD-ROM and 1 CD-RW. I recently bought a DVD-RW, and when I have it plugged in and want to boot up, it gets as far as windows "loading" screen and then reboots. Do I need more power, or can my mobo not handle it? (msi k7n2 delta ilsr w/latest drivers afaik)