Useful programs for Windows 8, 7, XP

Nice to buy a new computer. However, too early to rejoice, because the operating system is installed only. Indeed, but our new PC is useful only with programs.
PC Master has chosen the programs of computer - the package of software for virus protection, internet, music, movies, communication, documents, spreadsheets, etc.

Finding drivers automatically and manually - Main programs - Optional programs
How to find drivers for known and unknown devices:
Main programs:
Optional programs:

Install one antivirus program only