MagicAndre1981, Thank you for this, now my pc boots just 19 seconds , which is extremely good for a HDD. This is screenshot comparing boot times before and after, In case the above link doesn't work, I have attached a Image file with this post. My PC Configuration : Windows 7 Ultimate x86 ASUS P5KPL-CM Intel Core 2 Duo E7400 @ 2.80GHz 2.00 GB RAM NVIDIA GeForce 8400GS 512MB Western Digital HDD 250 GB (System) Hitachi HDD 160 GB Edit : I don't know why the After Summary has 27 seconds, Infact my PC boots in 19-20 seconds only.