1. The average life-span is typically 6-7 years or more. Depending on what your OS you have support for it vary. Now the average hardware will advance to the point of certain age that you need to upgrade.You can keep your laptop in good condition is will last you 10+ years.he average life-span is typically 6-7 years or more. Depending on what your OS you have support for it vary. Now the average hardware will advance to the point of certain age that you need to upgrade.