BSOD randomly when downloading (I think this is what causes it).

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Code:

fffff880`0d811908  fffff880`0716c6b0Unable to load image \SystemRoot\system32\Drivers\SEP\0C0103E8\009D.105\x64\SRTSP64.SYS, Win32 error 0n2
*** WARNING: Unable to verify timestamp for SRTSP64.SYS
*** ERROR: Module load completed but symbols could not be loaded for SRTSP64.SYS
 SRTSP64+0x7a6b0

Please remove Norton/Symantec. Norton tends to cause BSOD-s and causes several other issues. I would recommend uninstalling it with the Norton Removal Tool and replace with Microsoft Security Essentials To Test.

• Norton Removal Tool
• Symantec Removal Tool
  

I have seen Trend Micro AV causing problems such as bsods on some systems, please uninstall this as well for testing purpose.

Code:

Start Menu\Programs\Trend Micro Titanium Internet Security    GRIZPC\Owner:Start Menu\Programs\Trend Micro Titanium Internet Security    GRIZPC\Owner

Code:

fffff880`0d811ac8  fffff880`0705376c Teefer+0x676c
fffff880`0d811b08  fffff880`07054120 Teefer+0x7120
fffff880`0d811b38  fffff880`070591c0 Teefer+0xc1c0

• Trend Micro Diagnostic Uninstall Tool Download - TechSpot

Microsoft Security Essentials.

Recommended from a strict BSOD perspective, compatibility & stability compared to other antiviruses/internet security software. It is free and lightweight:-

• Microsoft Security Essentials - Free Antivirus for Windows
  
  • Malwarebytes : Malwarebytes Anti-Malware removes malware including viruses, spyware, worms and trojans, plus it protects your computer
    
    • Good and Free system security combination.
    • How to Scan Your Computer With Multiple Antivirus Programs - How-To Geek
    
    
  
  

   Warning

Do not start the free trial of Malware Bytes; remember to deselect that option when prompted.

Run a full scan with both (separately) once downloaded, installed and updated.

Code:

fffff880`0d811158  fffff880`0843ef63Unable to load image \SystemRoot\system32\DRIVERS\NETwNs64.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for NETwNs64.sys
*** ERROR: Module load completed but symbols could not be loaded for NETwNs64.sys
 NETwNs64+0x12f63

Code:

fffff880`0d8117b8  fffff880`0f404aa4Unable to load image \SystemRoot\system32\DRIVERS\VBoxNetFlt.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for VBoxNetFlt.sys
*** ERROR: Module load completed but symbols could not be loaded for VBoxNetFlt.sys
 VBoxNetFlt+0x4aa4

Go to this link: Intel® Driver Update Utility

Check the system for latest updates, download and install them one by one.

Reinstall the virtual box software to its latest.

Perform a System File Check:

1. Click on the start
2. Type CMD on Search
3. Left click and Run as Administrator
4. Type SFC /scannow

Full tutorial here:

• SFC /SCANNOW Command - System File Checker

Disk Check on your hard drive for file system errors and bad sectors on it:

• Disk Check

Reduce items at start-up. Nothing except anti-virus is required plus improves the time for logging in windows.

• Startup Programs - Change
• Troubleshoot Application Conflicts by Performing a Clean Startup

Daemon Tools:

Code:

Start Menu\Programs\DAEMON Tools Lite    Public:Start Menu\Programs\DAEMON Tools Lite    Public

Please uninstall DAEMON Tools. It uses a driver called sptd.sys which is known to cause BSODs in Windows 7. Uninstall the software using Add/Remove Programs. Reboot the system. Once the program is uninstalled, run sptd.sys uninstaller to remove the driver from your system.

As an alternative, many people recommend the use of Total Mounter or Magic ISO

Let us know the results.

Please see the description of the SRTSP64.SYS driver.
Driver Reference Table - SRTSP64.SYS

Driver Description: Symantec Real Time Storage Protection