system very slow suddenly

[anni]

Hi,
When i was de fragmenting my c drive, suddenly due fluctuation system re-started. now it will take 2.5+ min to boot and system also become very slow. Before that it was very fast . No other s/w i install. How can i know that which file being corrupted and how to fix. I already tried system mechanics 8 or tune up utilities.

[Aspire]

Maybe thats because some files were left fragmented.
Run a De fragment again and maybe clean up your disk.