2 minidumps crash at usbuhci.sys, they have a bugcheck of D1.
UHCI USB Miniport Driver
1 minidump crashes at usbccgp.sys, it has a bugcheck of D1.
USB Common Class Generic Parent Driver
1 minidump crashes at win32k.sys, it has a bugcheck of 8E.
Multi-User Win32 Driver.
1 minidump crashes at ipnat.sys, it has a bugcheck of D1.
IP Network Address Translator
These are all windows files.
0x000000D1: DRIVER_IRQL_NOT_LESS_OR_EQUAL
The system attempted to access pageable memory using a kernel process IRQL that was too high. The most typical cause is a bad device driver (one that uses improper addresses). It can also be caused by caused by faulty or mismatched RAM, or a damaged pagefile.
0x0000008E: KERNEL_MODE_EXCEPTION_NOT_HANDLED
A kernel mode program generated an exception which the error handler didn’t catch. These are nearly always hardware compatibility issues (which sometimes means a driver issue or a need for a BIOS upgrade).
Try updating all your usb devices drivers and see if that helps. If it doesn`t, try disconnecting all usb devices and see if your system becomes stable. If it does, start adding usb devices one at a time and testing your system.
You should also go
HERE and follow the instructions, as you may have a ram problem.
Please let me know how you get on.
Regards Howard