I've started to notice an unusual behavior when powering on my PC. I normally leave my PC on 24/7, but occasionally I have to power it down fully (when disconnecting cords, for instance). If I cold boot my PC, it almost always hangs in the middle of the boot process. When I hit the reset button, the boot process goes without a hitch. I am assuming that this is due to an insufficient power supply, since the cold boot process requires more power than standby operation. I have a 300W power supply with 3 hard drives, a DVD-ROM, a CD-RW, video card, sound card and network card. I'm assuming I'll need at least a 400W replacement. I figure that if I replace my power supply, this will be an excellent opportunity to make my PC a little bit quieter. I am currently running an Athlon XP 1600+ on an Epox 8K7A+ motherboard. There are three fans in the system: the power supply fan (Enlight, came with case), the CPU fan (standard AMD retail) and a motherboard chipset fan. What make/models should I look for to quiet my PC down? I really don't want to replace my CPU heatsink if I can help it. Are there adapters required? Thanks for your help.