Core: 334NH-RXG76-64THK-C7CKG-D3VPT
Professional: XHQ8N-C3MCJ-RQXB6-WCHYG-C9WKB
Enterprise: MNDGV-M6PKV-DV4DR-CYY8X-2YRXH
FHQNR-XYXYC-8PMHT-TV4PH-DRQ3H
 
Keys to install (and appropriate for KMS activation):
gvlkCore = M9Q9P-WNJJT-6PXPY-DWX8H-6XWKK
gvlkProfessional = GCRJD-8NW9H-F2CDX-CCM8D-9D6T9


If u need Legit keys to activate Windows 8.1 PRO u can buy off me.......
check this link
http://7pmtech.com/threads/windows-8-professional-product-key-giveaway-for-15.4979/


Or Contact me skype: conan.haibara1