Websites that use extra security measures maintain certificates to help you verify that the website is safe to use.   The error message to which you are referring says something like “This security certificate has expired or is not yet valid”.   Even though this sounds complicated it may actually be quite simple to solve. If you are always getting that message on every secure website, check...

For several months now, some AT&T customers have been experiencing difficulty when trying to use their email programs.  The cause — AT&T’s merger with Yahoo.   As a result of the merger, AT&T is moving its email services to the Yahoo mail system.   You will keep your current email address but will be using a different mail server. For customers using Microsoft’s Outlook or...

First, let’s make sure that we are talking about the memory chips and not the hard disk.  The hard disk is the device where all of your personal data and the Windows software are permanently stored.  Increasing the capacity of the primary hard disk means that you have to replace it.  Then you have to re-install all of your Windows software and your personal programs on the new disk. The random-access...

Not unless your main computer disk is nearly full. Otherwise, having data on your computer has no significant impact on its speed. Things that affect how well your computer performs include having too many programs in use at the same time, having more than one person logged onto your computer, spyware or virus programs stealthily using up your computer’s resources, and needing a memory upgrade. Your...

If you are running it on a regular schedule then you are probably wasting your time. The purpose of the Disk Defragmenter program is to keep your data files organized. The program only needs to be used after significant changes have been made to your computer. For example, when you have added or removed a large number of files, upgraded to a new version of Windows, or installed new programs. It...

Of course the most effective method is to make a backup copy of your data on a media that is separate from your computer.   Do that as often a necessary to prevent the loss of your newest files.  Here are some other tips. Invest in a UPS (Uniterruptible Power Supply).  That will prevent your computer from crashing during a power failure.  If you hear unusual noises coming from your computer, turn...