I'm considering to upgrade my PC to Ubuntu v17.10, but I'm afraid because there's a BIOS issue has been confirmed for several different lines of Lenovo laptops also the reports of it affecting a few Acer, Toshiba and Dell laptops.
Should I upgrade or not? Also I can't download the Latest Ubuntu 17.10 ISO, the official website download link is currently discouraged.
Ubuntu 17.10.1 has been released to avoid that problem. Ensure that the installer you use is 17.10.1, not 17.10. The ISOs are available here.