First, ndis.sys is a Windows Operating System driver. It is a network layer driver crucial for network interface controllers that access the internet.
PCNDIS5.sys is different in that it belongs to the PCAUSA Rawether software. The issue is with this software, particularly this driver. I would contact PCAUSA Rawether tech support and a) tell them of your issies and b) the minidump error codes and that their driver pcndis5.sys was specifically cited as the cause of your issues.