installing windows 8 on lenovo L520 hangs on boot

when trying to install windows boot hangs on the initial boot screen …

after bugging around for an hour or so the solution is to update the BIOS to a version > 1.17 …

it is fixed with version 1.18 and as of today i installed version 1.19 …

http://support.lenovo.com/en_US/downloads/detail.page?DocID=DS013626