Screen resolution is a simple concept, but when combined with the myriad ways that Windows can be configured, it can become confusing.

Leaving your computer on 24 hours a day rarely increases risk significantly, as long as you follow a couple of simple guidelines.

USB thumb drives or flash drives are a non-obvious but easy way to spread malware. Be careful when dealing with any unknown device.

If you've lost your Facebook password, there are a couple of ways to recover: use the Facebook process for account recovery, or check your browser's remembered passwords.

Changing an email address involves changing more than just the address. I'll look at common scenarios and a few additional approaches.

If someone has access to your email, they can use that as a starting point to hack your other accounts.

Use Process Explorer to identify windows or message boxes that appear without any obvious indicator of what program they're from.

Facebook is removing an account recovery feature, making this an important time to take stock of your own account security.

Email can bounce for many reasons. I'll look at several of the most common email bounce messages and try to interpret what they really mean.

If you forget your Wi-Fi password Windows may be able to remind you what it is.