NIS causes a BSOD? [Win7]

Hi.

I've bought a NIS (deluxe one) a couple of days ago and, well, strange things began to happen.

 

During the previous 2016 year I've experienced 2 BSODs.

For the last two days - right after I've purchased NIS - I've experienced 3 of them already. I don't know if NIS is the one causing them but I can't think of any other suspect. 

First one, while PC was in Idle state (maybe NIS started a full scan?): ntoskrnl.exe (address isn't listed for some reason)

Second one, during game A: ntoskrnl.exe+749fc and USBD.SYS+8692dd0, KERNEL_DATA_INPAGE_ERROR

Third one, during game B: toskrnl.exe+ef842, also KERNEL_DATA_INPAGE_ERROR

 

Did a Sfc /scannow, we'll see how the things are going, but I have a feeling it won't help much.

 

I've also shared my subscription with PC of my sister. She has experienced 2 BSODs already. First one was during web-surfing on Youtube and the second one happened during Skype conversation. 

 

Help please?