Got Bluescreens because of the vsserv.exe
see my attached dumbfile.
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*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *
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IRQL_GT_ZERO_AT_SYSTEM_SERVICE (4a)
Returning to usermode from a system call at an IRQL > PASSIVE_LEVEL.
Arguments:
Arg1: 0000000076d2bbaa, Address of system function (system call routine)
Arg2: 0000000000000002, Current IRQL
Arg3: 0000000000000000, 0
Arg4: fffff8800c41fb60, 0
Debugging Details:
------------------
PROCESS_NAME:  vsserv.exe
BUGCHECK_STR:  RAISED_IRQL_FAULT
FAULTING_IP:
+0
00000000`76d2bbaa ??              ???
CUSTOMER_CRASH_COUNT:  1
DEFAULT_BUCKET_ID:  WIN7_DRIVER_FAULT
CURRENT_IRQL:  2
ANALYSIS_VERSION: 6.3.9600.17336 (debuggers(dbg).150226-1500) amd64fre
LAST_CONTROL_TRANSFER:  from fffff800032ba9a9 to fffff800032bb400
STACK_TEXT:  
fffff880`0c41f928 fffff800`032ba9a9 : 00000000`0000004a 00000000`76d2bbaa 00000000`00000002 00000000`00000000 : nt!KeBugCheckEx
fffff880`0c41f930 fffff800`032ba8e0 : 00000000`00000e50 fffff880`0c41fb60 00000000`00000000 fffff800`035a698b : nt!KiBugCheckDispatch+0x69
fffff880`0c41fa70 00000000`76d2bbaa : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiSystemServiceExit+0x245
00000000`263bfb08 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0x76d2bbaa
STACK_COMMAND:  kb
FOLLOWUP_IP:
nt!KiSystemServiceExit+245
fffff800`032ba8e0 4883ec50        sub     rsp,50h
SYMBOL_STACK_INDEX:  2
SYMBOL_NAME:  nt!KiSystemServiceExit+245
FOLLOWUP_NAME:  MachineOwner
MODULE_NAME: nt
IMAGE_NAME:  ntkrnlmp.exe
DEBUG_FLR_IMAGE_TIMESTAMP:  5708972e
IMAGE_VERSION:  6.1.7601.23418
FAILURE_BUCKET_ID:  X64_RAISED_IRQL_FAULT_vsserv.exe_nt!KiSystemServiceExit+245
BUCKET_ID:  X64_RAISED_IRQL_FAULT_vsserv.exe_nt!KiSystemServiceExit+245
ANALYSIS_SOURCE:  KM
FAILURE_ID_HASH_STRING:  km:x64_raised_irql_fault_vsserv.exe_nt!kisystemserviceexit+245
FAILURE_ID_HASH:  {7e9f2f5a-c8f7-350e-d3b5-490f9ba5e969}
Followup: MachineOwner
anthing that can cause the error?