Leo Notenboom

Leo A. Notenboom is the owner of Puget Sound Software, LLC and the Leo in Ask Leo!. Leo has been in the personal computer and software industry since 1979, as a software engineer, a manager of software engineers, and as a consultant. In 1983 Leo joined what was then a medium sized local company called Microsoft and spent the next 18 years in a wide variety of groups working on a wide variety of software. If you're running Microsoft Windows, if you've used a Microsoft development tool or Microsoft Money, or if you've ever purchased a ticket through Expedia, there's a good chance you've been touched by some of his work. And of course, since 2003, Leo has been answering your tech questions on Ask Leo!

Go Back to Windows 7 from Windows 10

Leo Notenboom / August 11, 2015

Regretting your Windows 10 upgrade? Here are four ways to go back to Windows 7.

Go Back to Windows 7 from Windows 10 Read More »

Where Did this Window Come From?

Leo Notenboom / July 28, 2015

How to use process explorer to figure out what program is generating a particular window.

Where Did this Window Come From? Read More »

Flash or No Flash

Leo Notenboom / July 20, 2015

Leo Notenboom says there are no easy solutions for dealing with Flash security vulnerabilities

Flash or No Flash Read More »

Has Your Email Been Blocked

Leo Notenboom / July 6, 2015

If your email fails to arrive – the reason may not be obvious.

Has Your Email Been Blocked Read More »

how long should my password be?

Changing Your Password is Not Enough

Leo Notenboom / June 23, 2015

If your email or other online account is hacked – changing your password is a good first step – but not enough.

Changing Your Password is Not Enough Read More »

will you switch to windows 8

Should You Upgrade to Windows 10

Leo Notenboom / June 10, 2015

Leo Notenboom helps you evaluate Windows 10 upgrade options.

Should You Upgrade to Windows 10 Read More »

What Causes a Black Screen on a PC

Leo Notenboom / May 26, 2015

The most common reasons the screen on your PC has gone black.

What Causes a Black Screen on a PC Read More »

When Free Isn’t Really Free

Leo Notenboom / May 19, 2015

How to decipher all of the free software download, free trial & free scan offers.

When Free Isn’t Really Free Read More »

Setting Up a Microsoft Account Recovery Code

Leo Notenboom / May 12, 2015

How to regain access to lost, hacked and inaccessible Microsoft accounts.

Setting Up a Microsoft Account Recovery Code Read More »

Email Attachments Are Trouble

Leo Notenboom / April 29, 2015

Far too frequently our willingness to open email attachments – leads to malware infections.

Email Attachments Are Trouble Read More »