HP Micro Server N54L with Server 2012R2

Long wait is over, reclaim your pcie x1 slot back.

new bios firmware for N54L can be found here

http://h20565.www2.hp.com/portal/site/hpsc/template.PAGE/public/psi/swdDetails/?sp4ts.oid=5336618&spf_p.tpst=swdMain&spf_p.prp_swdMain=wsrp-navigationalState%3Didx%253D%257CswItem%253DMTX_57720d956df94dfcbaa0e28256%257CswEnvOID%253D4168%257CitemLocale%253D%257CswLang%253D%257Cmode%253D%257Caction%253DdriverDocument&javax.portlet.begCacheTok=com.vignette.cachetoken&javax.portlet.endCacheTok=com.vignette.cachetoken

or search for SP64420.exe

once Bios is updated, windows 2012R2 will load/install as normal, instead of being stuck on 84% or hang.

"
Important Notes:
This SoftPaq version will execute the "kbd" utility to upgrade the system bios due to a bootblock change.Firmware Dependencies:
NoneProblems Fixed:
Addressed an issue where Microsoft Windows 2012 R2 may stop responding while booting the operating system."