Belarc Advisor is a great free tool for computer auditing and software asset management. It helps IT professionals and consumers attain a comprehensive hardware and software inventory on their computers. Belarc is also handy in recovering lost software keys.
Download here: http://www.belarc.com/free_download.html
When installed, Belarc provides a report with information on:
- Software
- Operating System (including settings and installed updates)
- Virus protection and status
- All installed software and most license keys
- Users
- Hardware
- Processor
- Drives
- Motherboard
- Installed Memory Modules
- Network Drives
- Installed Printers
- Controllers
- Various other devices
- Display and Graphics Card information