|Your question has nothing to do with CPUs or overclocking. You should be asking in the Hardware or XP forum.|
What's a "bata" hard drive? Is it IDE/PATA or SATA? Why were you reformatting in the 1st place? If it was an attempt to fix some sort of problem, maybe the problem is hardware related rather than software? If the HDD tests OK with the diagnostics, try testing the RAM with memtest86.