I haven't built a desktop PC since 1991 so I guess I'm a Newbie again. At present I have a Dell with Win7 Pro SP1 and my Neighborhood is experiencing power fluctuations which my neighbors have also noticed. Our house fans (20" box fans, ceiling fans, lights) speed up/slow down. brighten/dim intermittently. It has only Once been Low enough to shut off appliances, TV's and PC's. Is there a program I can download that won't overload my CPU or processor to monitor that and fan speed, CPU temp, etc...? Win7 Pro 32X, Pentium Dual Core E5300 2.6 GHz, 2 G Ram, 160G HD, (used disk space 55%) AVG Anti-virus (Free Version) and Windows Defender,