Q: I have a Dell Inspiron 1545 PC that runs Windows 7. I've heard that Microsoft is no longer providing security updates for Windows 7. Should I upgrade the PC to Windows 10 or discard the computer?
Tom Dominise, St. Louis Park
A: Neither. Windows 7, now 7 years old and still used by 47 percent of the world's PCs, will be safe for another three years. While Microsoft is no longer supplying enhancements for Windows 7, it will continue providing security updates until January 2020 — and that's what matters.
Dell says your PC is too old to be upgraded to Windows 10, and as a result it doesn't provide the driver software (used to control PC components) that your model would need. If you want Windows 10, you will need to buy a new PC.
Q: Windows Update no longer seems to work on my Windows 7 laptop; the program runs but never finds the updates. My security software can't find anything wrong. What can I do?
Roger Kormendy, Prior Lake
A: There have been many complaints about the slow pace of Windows 7's automatic update software (caused by a previous update gone awry.) But there is a way to speed things up.
Experts recommend that you manually download and run Microsoft security update KB3153199 (see tinyurl.com/htvmcft if you have 32-bit Windows 7, or tinyurl.com/joehnqx if you have the 64-bit version of the operating system).