Should I fix my six-year-old laptop or replace it?

Pablo asks if it's worth patching up an old ThinkPad T510 or best to buy a new Windows 10 laptop

I have a Lenovo ThinkPad T510 purchased about six years ago. I'm perfectly happy with it, except the keyboard needs replacing and batteries seem to lose their ability to charge within a couple of years. The keyboard and battery could be replaced for less than $100. Other than those factors, is there any reason to replace the machine? If I buy a Windows 10 machine, could I or should I continue to run Windows 7 on it? Pablo

There is no universal answer to your first question. The time to sell, repurpose or recycle an old PC depends on a large number of factors. Some are technical, such as the specification, the build quality, and whether it will actually run Windows 10. Some are personal, such as what you use it for, how much money you can spare, and whether your time has any value.