Computer starts run slow recently, Help...

Eclipse95

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Feb 17, 2011
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Hi guys, I have faced this problem recently, my computer starts boot slow and load folders, icon and internet pages slowly during startup.
When I bought this computer I did not face any problem like this, it was running smooth and fast.
I am using CCleaner to clean up my temp files and registries, but why it still runs slow?

My specs
Window 7 Ultimate
Intel i5 760
4GB RAM

Thanks