adobe flash player 9 free download for windows 7Why is my computer so slow?

About 3 weeks ago my computer just froze and began getting really slow and has been slow ever since. What makes it so slow?

My internet is 33ping (speedtest.com)

I cleaned out all my registry files with Advance SystemCare and CCleaner and it made it twice as slow

I scanned the whole computer with Avast(free version) and AVG

Here are the programs i currently have on my computer:

McAfee SiteAdvisor
Windows Live ID Sign0in assastant
Microsoft Office Live Add-in 1.5
Advance SystemCare 3
Intel(R) Graphics Media Accelerator Driver
Google Chrome
Adobe Flash Player 10 ActiveX
Free Youtube Download 2.7
World of Warcraft
Adobe Reader 9.3.3
Microsoft Office Outlook Connector
Microsoft SQL Server 2005 Compact Edition [ENU]
Windows File Explorer
Windows Live Essentials
Windows Live Sync
Windows Live Upload Tool
BitTorrent
Conexant HD Audio
AVG Free 9.0
CCleaner
Microsoft Visual C++ 2005 Redistributable
NVIDIA PhysX
O+
Google Toolbar for Internet Explorer
Adobe Flash Player 10 Plug in
Microsoft .NET Framework 4 Client Profile
Compatibillity Pack for the 2007 Office System
Microsoft Office Poweradobe flash player 9 free download for windows 7Point Viewer 2007 (english)
Microsoft Silverlight
Final Media Player 2010
Free Adio CD burner version 1.2
Free Youtube to iPhone Converter version 2.3
Free Youtube to iPod Converter version 3.3
Free Youtube to MP3 Converter version 3.3
Pando Media Booster
Mozilla Firefox(3.6.2)
DNA
DVDVideoSoft Toolbar
Microsoft Offive Enterprise 2007
7-Zip 4.65
Microsoft Works
Java
Microsoft .NET Framework 3.5 SP1
MSXML 4.0 SP2
Activation Assistant for the 2007 Microsoft Office
Atheros Driver Installation Program
Cyberlink Youcam
HDAUDIO Soft Data Fax Modem with SmartCP
HD DVD Play 3.7
LightScribe System Software 1.14.17.1
muvee Reveal
NetWaiting
Realtek 8XXX 8XXX 8XXXX 8XXXX Ethernet Driver
Realtek USB 2.0 Card Reader
Synaptics Pointing Device Driver
Acrobat.com
Adobe AIT
Cyberlink DVD suite
HP Active Support Library
HP Customer Experience Ehancements
HP Help and Support
HP Quick Launch Buttons HP Total Care Advisor
HP Total Care Setup
HP Updates
HP User Guides 0118
HP Wireless assistant
Juno Preloader
LabelPrint
Microsoft Live Search Toolbar
NetZero Preloader
Power2GO
PowerDirector

Also can you tell me which progadobe flash player 9 free download for windows 7rams are useless and which ones are making it go slow

Thank you in advance.

Local Disk (C:) used space: 220 GB free space: 66.7

RECOVERY (D:) used space: 9.09
free space: 1.8

RAM: 3.00 GB

Things that start up when computer is on:

Synaptics Pointing Device Driver
HP QuickPlay
StartMen Application
MUI StartMen Application
Windows Defender
HP Quick Launch Buttons
HP Health Check Scedular
hpwuSchd Application
HP Wireless Assistant
GrooveMonitor Uility
Adobe Acrobat
Adobe Reader
AVG
Intel(R)
Java(TM)
LightScribe
GoogletoolbarNotifier
DNA
Pando Media Booster
Microsoft Windows
Google Update
McAfee Security Scanner
Do you find your windows system become more and more slowly after used it a few month, the reason is your windows registry stored much rubbish and it becomes bloated. Why you install so many software? i think the lesser the better. To solve your pc problem, you can use windows registry cleaners software.
Five Best Registry Cleaner Software Reviews