If your computer seems to have slowed down for no obvious reason you may like to try some or all of the following troubleshooting steps using free or trail programs.
Note: Some steps are recommended for the experienced only.
- Uninstall any unused programs you may have installed over the years
- CCleaner: Clean out the temporay files, as most minor infections tend to reside there. Also turn off any unnecessary startup programs under tools
- TDSSkiller: Make sure there’s no TLDx rootkit. ie. Programs which mask malware
- Malwarebytes Anti-Malware: Do a full scan, fix all
- Superantispyware: Do a full scan, fix all
- Run a full scan using your installed Antivirus, you do have one dont you?
- Hitmanpro: Do a scan to see if there’s anything left. It’s also useful software to find any hidden proxy settings
- HiJackThis: Can be used to find obscure issues. Copy and past the log to this to check for nasties – Take care!
- Check for disk errors. WindowsKey-E > Right click C: > Properties > Tools > Check
- Check spare disk space. WindowsKey-E and check Local Disk C: Free amount
- Check for errors using the event viewer in the control panel
- Note: Scanners could be run in safe mode if removal fails
- Finally check the CPU and RAM usage using Ctrl-Alt-Del > Task Manager
Check for any windows updates. If updating this broken see the following.
- Download and run Microsoft Windows Update Troubleshooter
- Check your router is not blocking activex
- Add trusted sites: http://*.update.microsoft.com, https://*.update.microsoft.com, http://download.windowsupdate.com
- Check WindowsUpdate.log in the %windir% folder