ntoskrnl.exe crashing with PAGE_FAULT_IN_NONPAGED_AREA

When playing dota 2 I occasionally get a bsod with this error. I replaced the ram about a month ago with new ram when upon early digging I suspected it might be bad ram, it doesn't appear to be the case.

Build info:
cpu: AMD FX 8100
motherboard: gigabyte 2AC8
ram: 16 gb DDR3
gpu: AMD Radeon HD 7770




Dump Files from blue screen viewer:


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Dump File : 100716-73726-01.dmp
Crash Time : 10/7/2016 12:09:18 AM
Bug Check String : PAGE_FAULT_IN_NONPAGED_AREA
Bug Check Code : 0x00000050
Parameter 1 : fffff8a0`3ab8c000
Parameter 2 : 00000000`00000001
Parameter 3 : fffff880`15324de2
Parameter 4 : 00000000`00000000
Caused By Driver : usbohci.sys
Caused By Address : usbohci.sys+36516000
File Description :
Product Name :
Company :
File Version :
Processor : x64
Crash Address : ntoskrnl.exe+70180
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\100716-73726-01.dmp
Processors Count : 8
Major Version : 15
Minor Version : 7601
Dump File Size : 292,470
Dump File Time : 10/7/2016 12:11:19 AM
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Dump File : 091216-51339-01.dmp
Crash Time : 9/12/2016 11:27:25 PM
Bug Check String : PAGE_FAULT_IN_NONPAGED_AREA
Bug Check Code : 0x00000050
Parameter 1 : fffff8a0`2e370000
Parameter 2 : 00000000`00000001
Parameter 3 : fffff880`1533f292
Parameter 4 : 00000000`00000000
Caused By Driver : ntoskrnl.exe
Caused By Address : ntoskrnl.exe+6f400
File Description : NT Kernel & System
Product Name : Microsoft® Windows® Operating System
Company : Microsoft Corporation
File Version : 6.1.7601.23539 (win7sp1_ldr.160902-0600)
Processor : x64
Crash Address : ntoskrnl.exe+6f400
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\091216-51339-01.dmp
Processors Count : 8
Major Version : 15
Minor Version : 7601
Dump File Size : 288,214
Dump File Time : 9/12/2016 11:29:04 PM
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Dump File : 090416-58313-01.dmp
Crash Time : 9/4/2016 3:09:11 AM
Bug Check String : PAGE_FAULT_IN_NONPAGED_AREA
Bug Check Code : 0x00000050
Parameter 1 : fffff8a0`2cdcc000
Parameter 2 : 00000000`00000001
Parameter 3 : fffff880`15377292
Parameter 4 : 00000000`00000000
Caused By Driver : USBD.SYS
Caused By Address : USBD.SYS+277e0000
File Description :
Product Name :
Company :
File Version :
Processor : x64
Crash Address : ntoskrnl.exe+6f400
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\090416-58313-01.dmp
Processors Count : 8
Major Version : 15
Minor Version : 7601
Dump File Size : 288,158
Dump File Time : 9/4/2016 3:11:24 AM
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Dump File : 082816-56519-01.dmp
Crash Time : 8/28/2016 12:26:59 PM
Bug Check String : PAGE_FAULT_IN_NONPAGED_AREA
Bug Check Code : 0x00000050
Parameter 1 : fffff8a0`27b5c000
Parameter 2 : 00000000`00000001
Parameter 3 : fffff880`1533f292
Parameter 4 : 00000000`00000000
Caused By Driver : netbt.sys
Caused By Address : netbt.sys+23c30000
File Description :
Product Name :
Company :
File Version :
Processor : x64
Crash Address : ntoskrnl.exe+6f400
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\082816-56519-01.dmp
Processors Count : 8
Major Version : 15
Minor Version : 7601
Dump File Size : 288,158
Dump File Time : 8/28/2016 12:29:07 PM
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