I just recently purchased and hooked up a Cyber Power PFC Sinewave Series
CP1500PFCLCD UPS for my system. When I shutdown the OS (Windows 7) shuts down but the Fans and lights from my Computer remain on. I end up having to push the power button for a few seconds and it turns off completely. I tried plugging the PSU (Antec TruePower Quattro TPQ-1000 1000W Active PFC) power cable into a regular outlet and it turns off normally. I do not receive any windows improper shutdown errors and I've tried looking up for a way to resolve this but can not find anything.