I don't want to reload my system I just want to upgrade it the way MS says it should be done.
I Did a reset of my system and let it wipe the drive which takes some time because download was taking too long. Updated, uninstalled 3rd party av software, emptied software distribution folder, ran disk cleaner, cleared Windows Store cache files
Download/installation was smooth as clockwork
Perform a clean boot and retry Windows 8.1 installation
How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7?http://support.microsoft.com/kb/929135
Press Win Flag + X
Type services.msc
Ensure Bits, Windows Installer and Windows Update are started
Open Windows Update and install all important and optional updates
Uninstall 3rd party anti-virus software using vendor's removal toolor disable Windows Defender
Retry Windows 8.1 installation