My setup is P4 1.6 Ghz, 512 Mb SDRAM, 1 80 Gb and 1 40 Gb HDDs and 1 LG GDR8162B DVD-ROM and 1 Samsung 224B CD-R/RW running Windows XP Professional. A few days ago, I had power failure 2-3 times, which my UPS couldn't handle. The battery needs to be changed. Since then, Windows is detecting my...