My Computer Takes Forever To Shut Down?

hi, my computer over the last week or so has been taking quite sometime to shut down, booting up is normal and about 2-3 minutes. Before shut down was about 1 minute max, now its about 3-4 minutes. It stays on the "windows is shutting down" screen for most of the time before switching off. I have no... show more hi, my computer over the last week or so has been taking quite sometime to shut down, booting up is normal and about 2-3 minutes.

Before shut down was about 1 minute max, now its about 3-4 minutes. It stays on the "windows is shutting down" screen for most of the time before switching off.

I have no adware/spyware or viruses as i scan my computer often. Also i deframent my computer often aswell.


what could it be?
how can i speed up my shut down?
Update: sorry im on XP
Update 2: i already have CCleaner, i maintain my computer very well
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