Well firstly I think your hard drive is an old one and can cause problems.
You only have 256 memory installed so this can cause PC to slow especialy while surfing the net.
Now I have looked at your Belarc and you do not have a antivirus installed.
You will need to download one.
Download and update this free one update it and run it:
AVG Anti-Virus Free Edition - Reviews and free AVG Anti-Virus Free Edition downloads at Download.com
Then download this antispy and update and run it:
Spybot - Search & Destroy - Reviews and free Spybot - Search & Destroy downloads at Download.com
Turn on windows firewall.
You need to turn on automatic updates as it seems your is turned off.
Go to control panel then security option and turn on automatic updates.
Then go to Microsoft update center and update your PC.
Also download and run this:
Download details: Windows® Defender
Also this and do a full scan:
Windows Live OneCare safety scanner: Free online tool for PC health and safety
Have you activated windows via internet or telephone?
Also do this right click on my computer scroll to properties and open.
Click on hardware tab then on device manager button.
I need you to update drivers on all your hardware,please note downloading drivers or just running from a disk does not mean they are automaticaly installed.Please use device manager.
Right click on devices in there and choose update.