Scan Your PC with Anti-virus and Anti-malware software.

用反病毒和反恶意程序软件扫描你的电脑。

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To find out if your computer can run Windows 7, you can download the Windows 7 Upgrade Advisor provided by Microsoft and scan your PC with the tool.

要了解你的计算机是否可以运行Windows 7，你可以下载微软提供的工具Windows 7升级顾问扫描你的电脑。

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Check here. you're in safe mode now, so run a full scan of your PC at maximum security levels include the option to scan within compressed files, for example.

现在，你出于安全模式，那么可以对计算机按最大安全级别(例如包括对压缩文件)进行全面扫描。

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HackerWhacker will scan your PC's ports for security vulnerabilities.

CNN: Symantec offers Web-based PC checkups

In addition, it allows your PC to speak the text as you scan it, and can also read hand-written numerals.

CNN: Pen scanner reads, translates