How to troubleshoot a computer that is performing or running slowly or has stopped responding.

The procedure to troubleshoot a computer that is performing or running slowly or has stopped responding varies depending on the operating system installed on the computer. Follow the appropriate link below to troubleshoot this issue.

• Windows® 8.1 operating system
• Windows® 8 operating system
• Windows® 7 operating system
• Windows Vista® operating system
• Windows® XP operating system