Doesn't appear malware related. Two options now :
First would be a clean boot to determine which driver is crashing
Step 1:
Start the System Configuration Utility
Click Start, click Run, type msconfig, and then click OK.
The System Configuration Utility dialog box is displayed.
Step 2:
Configure selective startup options
In the System Configuration Utility dialog box, click the General tab, and then click Selective Startup.
Click to clear the Load Startup Items check box. Verify that Load System Services and Use Original BOOT.INI are checked.
Click the Services tab.
Click to select the Hide All Microsoft Services check box.
Click Disable All, and then click OK.
When you are prompted, click Restart to restart the computer.
Step 3: Log on to Windows
Now we get to the tedious part,:
If windows behaves itself then do the following
Restart MSConfig and select half of the disabled services and reboot
Is the problem still present ?
If Yes then deselect half of the services that you resumed and reboot
If no then select half of the remaining services and reboot
The intention here is to isolate the one service/driver that is causing the problem
Second :
While you are doing that could you zip and upload the 4 minidumps files in C:\windows\minidump to a file sharing site for me to collect
