Operating system help and support

Operating system basics

• What is an operating system?
• How to find what operating system is on a computer.
• Full list of operating system terms.

General operating system questions

• How to fix the missing operating system error.
• What is the most popular operating system?
• Linux vs. Windows.
• Command line vs. GUI.
• Can I upgrade my OS from 32-bit to 64-bit?
• How to set up dual-booting.
• How to fix IOS errors.

Operating system troubleshooting

• Windows 10 help and support
• macOS help and support
• Linux help and support
• MS-DOS help and support
• Windows 8 and 8.1 help and support
• Windows 7 help and support
• Windows Vista help and support
• Windows XP help and support
• Windows 2000 help and support
• Windows Me help and support
• Windows NT help and support
• Windows 98 SE help and support
• Windows 98 help and support
• Windows 95 help and support
• Windows 3.x help and support
• Windows CE help and support
• IBM OS/2 Warp help and support
• Unix help and support