BSOD due to ntoskrnl.exe+1509a0

Guys, I had this BSOD due to ntoskrnl.exe+1509a0.

I am using Windows 8.1 Pro 64 bits. PC is new, i7 4770 and according to AMD all video card drivers (R7 265) were updated. Using Zone Alarm as firewall. At the moment, the computer was downloading/uploading too much, don't know if this is related. Memory is 8 GB RAM 1600 MHz. OS installed in a firmware-updated SSD Samsung EVO 840 drive. Also using WD 1 TB.

HDTune says all drives are OK, too.

ZIP is available here for analysis.

Thanks!

Please run a scan with Malwarebytes: Malwarebytes | Free Anti-Malware & Internet Security Software Update prior to scanning and report back when scan is complete.

I did, and there's nothing wrong with any drive. Only found PUP Riskware, but these files are not viruses.

Enable Driver Verifier and wait for another crash to happen. Using Driver Verifier to identify issues with Drivers - Windows 7 Help Forums Check your drive for errors and run SFC SFC /SCANNOW Command - System File Checker - Windows 7 Help Forums