BSOD playing League of Legends, error 0x000000d1

Do you have any device connected to your USB port?

Code:

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Use !analyze -v to get detailed debugging information.

BugCheck D1, {0, 2, 0, fffff880042fd635}

Probably caused by : USBPORT.SYS ( USBPORT!USBPORT_DereferenceDeviceHandle+ad )

Followup: MachineOwner
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3: kd> !analyze -v
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DRIVER_IRQL_NOT_LESS_OR_EQUAL (d1)
An attempt was made to access a pageable (or completely invalid) address at an
interrupt request level (IRQL) that is too high.  This is usually
caused by drivers using improper addresses.
If kernel debugger is available get stack backtrace.

Do you have a different keyboard to try?

You should try switching all these three devices as the problem may lay within one of them.

OK.

BTW does it BSOD while league of legends only or other games as well?

Let us know.

Thanks.

Will wait for an update on the thread.

Code:

lmvm nvlddmkm
start             end                 module name
fffff880`0484c000 fffff880`052f7000   nvlddmkm T (no symbols)           
    Loaded symbol image file: nvlddmkm.sys
    Image path: \SystemRoot\system32\DRIVERS\nvlddmkm.sys
    Image name: nvlddmkm.sys
    Timestamp:        Fri Mar 15 07:37:00 2013 (51427B3C)
    CheckSum:         00A8D47C
    ImageSize:        00AAB000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4

Roll back to a last known stable driver for your NVIDIA:

• Driver Rollback
• System Restore and Driver Rollback Instructions

Take memtest. Run for 8 passes and test each stick in a know good slot for an additional 6 passes.

• RAM - Test with Memtest86+

   Note

Pay close attention to part 3 of the tutorial in order to rule out the faulty stick.

   Information

Errors are sometimes found after 8 passes.

   Tip

Do this test overnight, before going to bed.