You are brought a slow, sick PC that could really do with a tidy up and health check etc..
List the actions you would perform to get it back to speed (without doing a format

)
Cheers
- Boot into safe mode, make sure nothing dodgy's running during safemode.
- Stop system restore (right click my computer, properties, system restore, turn off system restore)
- Install Ad-aware, Spybot, A-Squared, Windows Defender, AVG Anti-spyware.
- Update them (you might need to boot into safe mode with networking) and run a full system scan with each of the above.
- Run CCleaner and clean everything, even cookies.
- Run CCleaner and scan for issues (registry issues)
- Get RegSeeker, do a full scan and repair/remove all issues.
- Install a decent firewall and anti virus, do a full scan & set it up to auto update etc.
- Make sure all Windows updates have been applied
- Reboot
- Check nothing dodgy is running.
- Go through msconfig and remove all unwanted entries.
- Install Speedfan and check the health etc. of the hard drive with SMART
- Install Everest Free Edition & check temps etc. are alright
- Defrag