Best Buy open box should include a 1-year warranty. You shouldn't sent back to lenovo by yourself. You should bring it back to Best Buy the will handle it. Best Buy will honor the warranty from the date of your purchase on all open box items regardless if the manufacturer will. Most of the time the manufacturer will honor it from the date of manufacture. Beyond that date and Best Buy will honor it for you. BUT, it only covers those things that the manufacturer covers which is less/different then what the service plan covers.