Yaj Computers

Mount or burn .ISO, or use win 7 usb/dvd tool to make a bootable USB.

Use this key for install:

XHQ8N-C3MCJ-RQXB6-WCHYG-C9WKB

Install as normal OS installation.
After installation, disconnect from internet and use commandprompt to uninstall productkey (slmgr -upk).

Use a retail windows 8 key:

slmgr.vbs -ipk NP48V-8TC68-42X46-DJXKD-JTV3H
slmgr.vbs -ipk M38PN-VQVY3-YF8F7-CFPQG-P7F9V
slmgr.vbs -ipk GNQRY-7228K-X9KDG-866JX-2YQG7
slmgr.vbs -ipk HB3K3-NM6YM-FFM22-BMHXF-9WXT7
slmgr.vbs -ipk DNK6C-32W83-43TG4-2V7K6-9KT67
slmgr.vbs -ipk G2NJM-7GQ2M-PGF76-4CRFG-3V3G7
 
slmgr.vbs -ipk PJWN9-4JCC4-HV7HV-HC7R9-C7F9V
slmgr.vbs -ipk PXYNY-W9H9R-C73KR-6KQVQ-7T667
slmgr.vbs -ipk CGWVF-N3VMK-CVG7W-MBB9Y-MY2KV
slmgr.vbs -ipk JCDXN-2Q4FQ-G44BQ-GHGBK-H49T7
 
---------------------------------------------
Old but still working Windows 8 Pro Retail Keys
slmgr.vbs -ipk K434Q-JQND6-33PKD-YWBRV-RF9T7
slmgr.vbs -ipk KJNKV-HDJPX-KD4KQ-YWVV6-D3R9V
slmgr.vbs -ipk KW3QN-KFYWP-3KTGY-W678X-RM2KV
slmgr.vbs -ipk M43PN-F7YFX-R926M-Q9MMR-Q9H3H
slmgr.vbs -ipk NC3VK-6CT96-8JVT8-C662M-PRYQH
slmgr.vbs -ipk NCMY7-RG8YC-2DV88-4TJ98-YPWXV
slmgr.vbs -ipk NDBBX-W6PHR-2WJRV-8BF28-RX49V
slmgr.vbs -ipk NTJMQ-3G77F-BF9TB-87MRB-B4DG7
slmgr.vbs -ipk PGNP7-GYWPQ-M7QVQ-PX2MW-29T67
slmgr.vbs -ipk PJWN9-4JCC4-HV7HV-HC7R9-C7F9V
slmgr.vbs -ipk PXYNY-W9H9R-C73KR-6KQVQ-7T667
slmgr.vbs -ipk DJD4R-TQNCX-B6HY8-J2KDC-3YFDH
slmgr.vbs -ipk FX2FN-VVPY7-M7QG7-XG7X4-X2BQH
slmgr.vbs -ipk HV8NK-MCCM2-J7CDF-B46H7-46V3H
slmgr.vbs -ipk JC2BC-NQXKF-W8M7G-H7DRR-3C73H

Open up cmd prompt as admin to install productkey!!
Use phone activation, always using option 1!! (home user, 1pc!)

If one key fails, just keep on trying, one of 'em will work!
Keep your PC offline during activation, or your installation ID will be blocked!!!

To install languagepack, use win+r, choose run, in the box that opens up typ "lpksetup" and point to the
languagepack you want to install. (mount the dvd with lang pack first, ofcourse!)

Have fun with your activated copy of Windows 8.1 RTM!!