Arrived non-bootable with obvious physical damage (even for a 'certified refurb') and reporting disk errors on boot that the Windows 10 repair utility could not fix. Followed basic troubleshooting, could not even boot into safe mode via Win10 Advanced Options > startup settings, just an endless boot loop. Microsoft troubleshooting via the command prompt fared no better, and couldn't detect a valid Windows installation. I was unwilling to try to re-image a refurb due to it's special Win10 liscence. Returned it same day. Hard to believe this passed Lenovo QC testing, and wonder if I didn't receive a re-stock that was previously returned to Amazon with issues. Shipping box was also in poor shape (UPS), so maybe that factored in. I've been building desktops for over 20 years, but laptops are not as easy to troubleshoot without OS installation media, which this did not come with (in fact, it came with nothing but the power supply/charger, not even a manual or documentation). I have the very same model for business through my employer, and it works quite well for basic apps like MS Office, Adobe PDF, etc. So either Lenovo simply imaged and stickered this with no testing, or this one was previously bricked and dishonesty returned to Amazon. Either way, buyer beware. I doubt I'll trust a 'refurbished' device through Amazon again as Amazon may have no idea that they are shipping a damaged return or factory brick.