BSOD - kmode_exception_not_handled

gb325 · 03 Jun 2020

I am experiencing repeated BSOD errors with the stop code: KMODE_EXCEPTION_NOT_HANDLED and it says that dxgmms2.sys is what failed. I have attached a zip file from the log collector via instruction on this forum. Attachment 281651

I hope I uploaded correctly. I've gotten this error repeatedly and its the one I haven't been able to figure out on my own so I am enlisting your help. I've owned this PC (bought by a local PC builder) for a couple of months and this seems to be the last nagging issue (for now). If I missed any info you need I will update this thread, I am new to the world of custom PC's.

- Windows 10 Version 1909 (OS Build 18363.836)
- Intel Core i7 4790K @ 4.00GHz
- MSI Z97 GAMING 5 (MS-7917)
- 32.0GB Dual-Channel DDR3 @ 933MHz
- 2047MB NVIDIA GeForce GTX 980 Ti
- 931GB Western Digital WDC WD10EZEX-75M2NA0 (SATA )
- 465GB Samsung SSD 850 EVO M.2 500GB (SATA (SSD))

Current monitors:
DELL SP2309W (2048x1152@60Hz)
C27F591 (1920x1080@60Hz)

RJARRRPCGP · 03 Jun 2020

PSU is suspect.

MrPepka · 03 Jun 2020

Update BIOS - Support For Z97 GAMING 5 | Motherboard - The world leader in motherboard design | MSI Global
Update NVIDIA Graphics driver - NVIDIA DRIVERS GeForce Game Ready Driver WHQL

Ztruker · 03 Jun 2020

RJARRRPCGP said:

PSU is suspect.

Why do you say that? What data in the zip file suggests that is the possible cause of the problem?

Agree with MrPrepka, Nvidia probable cause:

*** WARNING: Unable to verify timestamp for nvlddmkm.sys

Code:

STACK_TEXT:  
fffff803`2dea8568 fffff803`28ea695e : 00000000`0000001e ffffffff`c0000005 fffff803`38fa87cb 00000000`00000000 : nt!KeBugCheckEx
fffff803`2dea8570 fffff803`28dcb182 : fffff803`29111000 fffff803`28c00000 0005e338`00ab7000 00000000`0010001f : nt!KiFatalExceptionHandler+0x22
fffff803`2dea85b0 fffff803`28cfa2c5 : 00000000`00000000 00000000`00000000 fffff803`2dea8b20 00007fff`ffff0000 : nt!RtlpExecuteHandlerForException+0x12
fffff803`2dea85e0 fffff803`28cfe85e : fffff803`2dea9518 fffff803`2dea9260 fffff803`2dea9518 ffffcc8e`a3c64000 : nt!RtlDispatchException+0x4a5
fffff803`2dea8d30 fffff803`28dd431d : 00000000`00000000 00000030`00000000 00000000`00000000 00000000`00000000 : nt!KiDispatchException+0x16e
fffff803`2dea93e0 fffff803`28dd00a0 : 00000000`00000001 ffffcc8e`a2ab8e00 ffffcc8e`9ef74b60 00000000`00000200 : nt!KiExceptionDispatch+0x11d
fffff803`2dea95c0 fffff803`38fa87cb : fffff803`38fba77a fffff803`385d4290 ffffcc8e`a2ccbae0 00000000`0000003d : nt!KiGeneralProtectionFault+0x320
fffff803`2dea9758 fffff803`38fba77a : fffff803`385d4290 ffffcc8e`a2ccbae0 00000000`0000003d 00000000`00000000 : dxgmms2!memcpy+0x14b
fffff803`2dea9760 fffff803`38faefda : ffffcc8e`a31655e0 fffff803`2c9514ad ffffcc8e`a2ccbae0 ffffcc8e`a31655e0 : dxgmms2!VidSchiExecuteMmIoFlipMultiPlaneOverlay3+0x76
fffff803`2dea98b0 fffff803`38f9a84b : 00000000`ffffffff 00000000`00989680 ffffcc8e`a3c963a8 00000000`00000000 : dxgmms2!VidSchiExecuteMmIoFlip+0x1206a
fffff803`2deaa330 fffff803`38f97266 : fffff803`2deaa438 00000000`00989600 ffffcc8e`00000000 ffffcc8e`00000001 : dxgmms2!VidSchUnwaitFlipQueue+0x3cb
fffff803`2deaa3d0 fffff803`38f9479b : ffffcc8e`a3ce21f0 ffffcc8e`a2f5d200 fffff803`2deaa629 fffff803`2deaa500 : dxgmms2!VidSchiProcessDpcCompletedPacket+0x856
fffff803`2deaa530 fffff803`34ea3181 : fffff803`2deaa629 ffffcc8e`a3c64000 ffffcc8e`a2ad06e8 00000000`00000000 : dxgmms2!VidSchDdiNotifyDpc+0x22b
fffff803`2deaa5e0 fffff803`3932e94c : ffffcc8e`a2ad0030 00000000`00000000 ffffcc8e`a2ad0030 ffffcc8e`a2c55000 : dxgkrnl!DxgNotifyDpcCB+0x91
fffff803`2deaa690 ffffcc8e`a2ad0030 : 00000000`00000000 ffffcc8e`a2ad0030 ffffcc8e`a2c55000 fffff803`3932e8df : nvlddmkm+0x9e94c
fffff803`2deaa698 00000000`00000000 : ffffcc8e`a2ad0030 ffffcc8e`a2c55000 fffff803`3932e8df ffffcc8e`a2c55000 : 0xffffcc8e`a2ad0030

Thread trace is all nvidia and dxggms entries.

Code:

fffff803`2dea8488  fffff803`399ae365 nvlddmkm+0x71e365
fffff803`2dea8490  00000000`00000000
fffff803`2dea8498  fffff803`2dea85b0
fffff803`2dea84a0  ffffcc8e`a2acb488
fffff803`2dea84a8  00000000`00000000
fffff803`2dea84b0  fffff803`399ae2d6 nvlddmkm+0x71e2d6
fffff803`2dea84b8  ffffcc8e`a2c55000
fffff803`2dea84c0  ffffcc8e`a5d23050
fffff803`2dea84c8  00000000`00000000
fffff803`2dea84d0  00000000`00000000
fffff803`2dea84d8  ffffcc8e`a9de6ce0
fffff803`2dea84e0  00000000`00000001
fffff803`2dea84e8  00000000`00031764
fffff803`2dea84f0  fffff803`2912822c nt!Ports <PERF> (nt+0x52822c)
fffff803`2dea84f8  fffff803`2deaac00
fffff803`2dea8500  fffff803`2dea8620
fffff803`2dea8508  fffff803`28dc5ebe nt!KiIdleLoop+0x7e
fffff803`2dea8510  00000000`00000000
fffff803`2dea8518  00000000`00000000
fffff803`2dea8520  fffff803`2dea8b20
fffff803`2dea8528  fffff803`28dc2497 nt!KeBugCheckEx+0x107
fffff803`2dea8530  ffff0000`00000000
fffff803`2dea8538  00000001`00000000
fffff803`2dea8540  fffff803`2deaac60
fffff803`2dea8548  fffff803`28da2c92 nt!_GSHandlerCheckCommon+0x5a
fffff803`2dea8550  ffffffff`ffffffff
fffff803`2dea8558  00000000`00000000
fffff803`2dea8560  00000000`00000282
fffff803`2dea8568  fffff803`28ea695e nt!KiFatalExceptionHandler+0x22
fffff803`2dea8570  00000000`0000001e
fffff803`2dea8578  ffffffff`c0000005
fffff803`2dea8580  fffff803`38fa87cb dxgmms2!memcpy+0x14b
fffff803`2dea8588  00000000`00000000
fffff803`2dea8590  ffffffff`ffffffff
fffff803`2dea8598  ffffcc8e`a2c55000
fffff803`2dea85a0  fffff803`28ea693c nt!KiFatalExceptionHandler
fffff803`2dea85a8  fffff803`28dcb182 nt!RtlpExecuteHandlerForException+0x12
fffff803`2dea85b0  fffff803`29111000 nt!Ports <PERF> (nt+0x511000)
fffff803`2dea85b8  fffff803`28c00000 nt!SeConvertSecurityDescriptorToStringSecurityDescriptor <PERF> (nt+0x0)
fffff803`2dea85c0  0005e338`00ab7000
fffff803`2dea85c8  00000000`0010001f
fffff803`2dea85d0  fffff803`2dea8ba0
fffff803`2dea85d8  fffff803`28cfa2c5 nt!RtlDispatchException+0x4a5
fffff803`2dea85e0  00000000`00000000
fffff803`2dea85e8  00000000`00000000
fffff803`2dea85f0  fffff803`2dea8b20
fffff803`2dea85f8  00007fff`ffff0000
fffff803`2dea8600  00000000`00000000
fffff803`2dea8608  fffff803`399ac61b nvlddmkm+0x71c61b
fffff803`2dea8610  00000004`00000000
fffff803`2dea8618  fffff803`399accb5 nvlddmkm+0x71ccb5
fffff803`2dea8620  00000000`00000000
fffff803`2dea8628  00000000`00000000
fffff803`2dea8630  00000000`00000000
fffff803`2dea8638  fffff803`392a044e nvlddmkm+0x1044e
fffff803`2dea8640  ffffcc8e`a9de6ce0
fffff803`2dea8648  00000000`00000000
fffff803`2dea8650  00001f80`0010000f
fffff803`2dea8658  00000000`00000010
fffff803`2dea8660  00010246`00180000
fffff803`2dea8668  00000000`00000000
fffff803`2dea8670  00000000`00000000
fffff803`2dea8678  00000000`00000000
fffff803`2dea8680  fffff803`39a5e438 nvlddmkm+0x7ce438
fffff803`2dea8688  00000000`00000000
fffff803`2dea8690  00000002`a3a58400
fffff803`2dea8698  00000000`00000000
fffff803`2dea86a0  00000000`00000000
fffff803`2dea86a8  00000000`00000000
fffff803`2dea86b0  fffff803`25fbf180
fffff803`2dea86b8  fffff803`2deaac90
fffff803`2dea86c0  00000000`001a6550
fffff803`2dea86c8  fffff803`29191400 nt!KiInitialThread
fffff803`2dea86d0  ffffcc8e`a5611080
fffff803`2dea86d8  00000000`00000000
fffff803`2dea86e0  00000000`00000001
fffff803`2dea86e8  00000000`00000000
fffff803`2dea86f0  00000000`00000000
fffff803`2dea86f8  00000000`000005a9
fffff803`2dea8700  fffff803`25fbf180
fffff803`2dea8708  ffffcc8e`9de71380
fffff803`2dea8710  ffffcc8e`a5611180
fffff803`2dea8718  00000000`00000000
fffff803`2dea8720  00000000`00000000
fffff803`2dea8728  00000000`00000000
fffff803`2dea8730  00000000`00000000
fffff803`2dea8738  00000000`00001f80
fffff803`2dea8740  00000000`00000000
fffff803`2dea8748  00000000`00000000
fffff803`2dea8750  00000000`00000000
fffff803`2dea8758  00000000`00000000
fffff803`2dea8760  00000000`00000000
fffff803`2dea8768  00000000`00000000
fffff803`2dea8770  00000000`00000000
fffff803`2dea8778  00000000`00000000
fffff803`2dea8780  00000000`00000000
fffff803`2dea8788  00000000`00000000
fffff803`2dea8790  00000000`00000000
fffff803`2dea8798  00000000`00000000
fffff803`2dea87a0  00000000`00000000
fffff803`2dea87a8  00000000`00000000
fffff803`2dea87b0  00000000`00000000
fffff803`2dea87b8  00000000`00000000
fffff803`2dea87c0  00000000`00000000
fffff803`2dea87c8  00000000`00000000
fffff803`2dea87d0  00000000`00000000
fffff803`2dea87d8  00000000`00000000
fffff803`2dea87e0  00000000`00000000
fffff803`2dea87e8  00000000`00000000
fffff803`2dea87f0  00000000`00000000
fffff803`2dea87f8  fffff803`399c131f nvlddmkm+0x73131f
fffff803`2dea8800  00000000`00000000
fffff803`2dea8808  00000000`00000000
fffff803`2dea8810  00000000`00000000
fffff803`2dea8818  00000000`00000000
fffff803`2dea8820  00000000`00000000
fffff803`2dea8828  00000000`00000000
fffff803`2dea8830  00000000`00000000
fffff803`2dea8838  00000000`00000000
fffff803`2dea8840  00000000`00000000
fffff803`2dea8848  00000000`00000000
fffff803`2dea8850  00000000`00000000
fffff803`2dea8858  00000000`00000000
fffff803`2dea8860  00000000`00000000
fffff803`2dea8868  00000000`00000000
fffff803`2dea8870  00000000`00000000
fffff803`2dea8878  00000000`00000000
fffff803`2dea8880  00000000`00000000
fffff803`2dea8888  00000000`00000000
fffff803`2dea8890  00000000`00000000
fffff803`2dea8898  00000000`00000000
fffff803`2dea88a0  00000000`00000000
fffff803`2dea88a8  00000000`00000000
fffff803`2dea88b0  00000000`00000000
fffff803`2dea88b8  00000000`00000000
fffff803`2dea88c0  00000000`00000000
fffff803`2dea88c8  00000000`00000000
fffff803`2dea88d0  00000000`00000000
fffff803`2dea88d8  00000000`00000000
fffff803`2dea88e0  00000000`00000000
fffff803`2dea88e8  00000000`00000000
fffff803`2dea88f0  00000000`00000020
fffff803`2dea88f8  fffff803`399e73d6 nvlddmkm+0x7573d6
fffff803`2dea8900  ffffcc8e`a9de6ce0
fffff803`2dea8908  fffff803`39308c4d nvlddmkm+0x78c4d
fffff803`2dea8910  00000000`00000007
fffff803`2dea8918  00000000`00000001
fffff803`2dea8920  ffffcc8e`a3c5f194
fffff803`2dea8928  ffffcc8e`a3c5f214
fffff803`2dea8930  ffff599a`92a101e9
fffff803`2dea8938  fffff803`399e6dcc nvlddmkm+0x756dcc
fffff803`2dea8940  00000000`00000000
fffff803`2dea8948  ffffcc8e`a2ac6000
fffff803`2dea8950  ffffcc8e`a2acb4d8
fffff803`2dea8958  00000000`00000000
fffff803`2dea8960  00000000`00000001
fffff803`2dea8968  00000000`00000000
fffff803`2dea8970  fffff803`2dea9a88
fffff803`2dea8978  fffff803`39983e60 nvlddmkm+0x6f3e60
fffff803`2dea8980  ffff599a`92a10d09
fffff803`2dea8988  00000000`00000007
fffff803`2dea8990  ffffcc8e`a3953000
fffff803`2dea8998  ffffcc8e`a9ab5240
fffff803`2dea89a0  00000000`00000001
fffff803`2dea89a8  00000000`00000001
fffff803`2dea89b0  00000000`00000000
fffff803`2dea89b8  ffffcc8e`a2ac6000
fffff803`2dea89c0  ffffcc8e`a9ab5240
fffff803`2dea89c8  00000000`00000000
fffff803`2dea89d0  ffffcc8e`a2ac6000
fffff803`2dea89d8  fffff803`399d10ae nvlddmkm+0x7410ae
fffff803`2dea89e0  ffffcc8e`a2c55000
fffff803`2dea89e8  fffff803`2dea8a79
fffff803`2dea89f0  fffff803`2dea9a88
fffff803`2dea89f8  fffff803`399bf81a nvlddmkm+0x72f81a
fffff803`2dea8a00  00000000`00000000
fffff803`2dea8a08  ffff599a`92a10029
fffff803`2dea8a10  ffffcc8e`a2ac6000
fffff803`2dea8a18  00000000`00000000
fffff803`2dea8a20  ffffcc8e`a2ac6000
fffff803`2dea8a28  fffff803`399d0283 nvlddmkm+0x740283
fffff803`2dea8a30  00000000`00000000
fffff803`2dea8a38  ffffcc8e`a3c5e840
fffff803`2dea8a40  ffffcc8e`a3c5e840
fffff803`2dea8a48  fffff803`2dea9a88
fffff803`2dea8a50  00000000`00000246
fffff803`2dea8a58  fffff803`28cc17fd nt!KeQueryCurrentStackInformationEx+0x6d
fffff803`2dea8a60  00000001`00000000
fffff803`2dea8a68  00000000`00000001
fffff803`2dea8a70  00000000`00000006
fffff803`2dea8a78  ffffcc8e`a3c5e000
fffff803`2dea8a80  fffff803`2deab000
fffff803`2dea8a88  fffff803`2dea5000
fffff803`2dea8a90  00000000`00000000
fffff803`2dea8a98  fffff803`28cfe154 nt!RtlGetExtendedContextLength2+0x3c
fffff803`2dea8aa0  00000000`00000000
fffff803`2dea8aa8  fffff803`28c61fb0 nt!RtlpGetStackLimitsEx+0x14
fffff803`2dea8ab0  fffff803`2dea8d60
fffff803`2dea8ab8  fffff803`2dea9518
fffff803`2dea8ac0  00000001`00000010
fffff803`2dea8ac8  00000000`00000000
fffff803`2dea8ad0  00000000`0010000b
fffff803`2dea8ad8  fffff803`28cf9f1c nt!RtlDispatchException+0xfc
fffff803`2dea8ae0  fffff803`2dea8d60
fffff803`2dea8ae8  fffff803`2dea9518
fffff803`2dea8af0  000004e8`fffffb30
fffff803`2dea8af8  000004d0`fffffb30
fffff803`2dea8b00  00000000`00000019
fffff803`2dea8b08  fffff803`2dea8b40
fffff803`2dea8b10  fffff803`2dea8b80
fffff803`2dea8b18  00000000`00000000
fffff803`2dea8b20  00000000`00000000
fffff803`2dea8b28  00000000`00000000
fffff803`2dea8b30  fffff803`28c00000 nt!SeConvertSecurityDescriptorToStringSecurityDescriptor <PERF> (nt+0x0)
fffff803`2dea8b38  fffff803`28ea693c nt!KiFatalExceptionHandler
fffff803`2dea8b40  fffff803`2deab000
fffff803`2dea8b48  fffff803`2dea5000
fffff803`2dea8b50  00000000`28c00000
fffff803`2dea8b58  fffff803`00000000
fffff803`2dea8b60  fffff803`2dea8c00
fffff803`2dea8b68  fffff803`2900ecd8 nt!_xmm+0x692b8
fffff803`2dea8b70  fffff803`2dea9518
fffff803`2dea8b78  000004f7`00000003
fffff803`2dea8b80  fffff803`2deaac60
fffff803`2dea8b88  00000000`00000000
fffff803`2dea8b90  fffff803`2912822c nt!Ports <PERF> (nt+0x52822c)
fffff803`2dea8b98  00000000`00000000
fffff803`2dea8ba0  fffff803`28dc5ebe nt!KiIdleLoop+0x7e
fffff803`2dea8ba8  fffff803`28c00000 nt!SeConvertSecurityDescriptorToStringSecurityDescriptor <PERF> (nt+0x0)
fffff803`2dea8bb0  fffff803`2912822c nt!Ports <PERF> (nt+0x52822c)
fffff803`2dea8bb8  fffff803`2deaac60
fffff803`2dea8bc0  00000000`00000000
fffff803`2dea8bc8  fffff803`2dea8620
fffff803`2dea8bd0  fffff803`28ea693c nt!KiFatalExceptionHandler
fffff803`2dea8bd8  fffff803`2900ecd8 nt!_xmm+0x692b8
fffff803`2dea8be0  fffff803`2dea8c00
fffff803`2dea8be8  00000000`00000000
fffff803`2dea8bf0  fffff803`2dea8d60
fffff803`2dea8bf8  fffff803`2dea8af0
fffff803`2dea8c00  00000000`0000000c
fffff803`2dea8c08  fffff803`34ea30f0 dxgkrnl!DxgNotifyDpcCB
fffff803`2dea8c10  fffff803`399f4d02 nvlddmkm+0x764d02
fffff803`2dea8c18  fffff803`38f90000 dxgmms2!VidSchMarkDeviceAsError <PERF> (dxgmms2+0x0)
fffff803`2dea8c20  fffff803`38fe0554 dxgmms2!__PchSym_ <PERF> (dxgmms2+0x50554)
fffff803`2dea8c28  fffff803`38f90000 dxgmms2!VidSchMarkDeviceAsError <PERF> (dxgmms2+0x0)
fffff803`2dea8c30  fffff803`38fe1850 dxgmms2!__PchSym_ <PERF> (dxgmms2+0x51850)
fffff803`2dea8c38  fffff803`38f90000 dxgmms2!VidSchMarkDeviceAsError <PERF> (dxgmms2+0x0)
fffff803`2dea8c40  fffff803`38fe09e0 dxgmms2!__PchSym_ <PERF> (dxgmms2+0x509e0)
fffff803`2dea8c48  fffff803`38f90000 dxgmms2!VidSchMarkDeviceAsError <PERF> (dxgmms2+0x0)
fffff803`2dea8c50  fffff803`38fdf990 dxgmms2!__PchSym_ <PERF> (dxgmms2+0x4f990)
fffff803`2dea8c58  fffff803`38f90000 dxgmms2!VidSchMarkDeviceAsError <PERF> (dxgmms2+0x0)
fffff803`2dea8c60  fffff803`38fdf6f0 dxgmms2!__PchSym_ <PERF> (dxgmms2+0x4f6f0)
fffff803`2dea8c68  fffff803`38f90000 dxgmms2!VidSchMarkDeviceAsError <PERF> (dxgmms2+0x0)
fffff803`2dea8c70  fffff803`38fdf5a0 dxgmms2!__PchSym_ <PERF> (dxgmms2+0x4f5a0)
fffff803`2dea8c78  fffff803`34e90000 dxgkrnl!IsTokenManagerReady <PERF> (dxgkrnl+0x0)
fffff803`2dea8c80  fffff803`34f36530 dxgkrnl!__PchSym_ <PERF> (dxgkrnl+0xa6530)
fffff803`2dea8c88  fffff803`39290000 nvlddmkm
fffff803`2dea8c90  fffff803`39b7acf0 nvlddmkm+0x8eacf0
fffff803`2dea8c98  fffff803`39290000 nvlddmkm
fffff803`2dea8ca0  fffff803`39bbb274 nvlddmkm+0x92b274
fffff803`2dea8ca8  fffff803`39290000 nvlddmkm
fffff803`2dea8cb0  fffff803`39bbb298 nvlddmkm+0x92b298
fffff803`2dea8cb8  fffff803`39290000 nvlddmkm
fffff803`2dea8cc0  fffff803`39bbb208 nvlddmkm+0x92b208
fffff803`2dea8cc8  fffff803`39290000 nvlddmkm
fffff803`2dea8cd0  fffff803`39b7bb0c nvlddmkm+0x8ebb0c
fffff803`2dea8cd8  fffff803`38fa87cd dxgmms2!memcpy+0x14d

RJARRRPCGP · 03 Jun 2020

Well, I didn't see the PSU specified. And I believe that can cause loss of stability at stock clocks.

MrPepka · 03 Jun 2020

There is no reason to believe so

gb325 · 03 Jun 2020

I updated NVIDIA graphics driver. No problems.

Then I updated BIOS with version 1.D from the link provided. Did it via USB drive with FAT32 format. Upon finishing the update in BIOS I'm now stuck in a startup loop that brings me to the startup screen with options "Continue - Exit and continue to Windows 10" "Use a device - Use a USB drive, netowrk connection, or Windows recovery DVD" " Troubleshoot - Reset your PC or see advanced options" and "Turn off your PC"

Choosing "Continue..." restarts the PC but brings me right back to the same screen.
I also tried the Startup Repair under Troubleshoot. No luck.

Any ideas what I can do?

- - - Updated - - -

MrPepka said:

Update BIOS - Support For Z97 GAMING 5 | Motherboard - The world leader in motherboard design | MSI Global
Update NVIDIA Graphics driver - NVIDIA DRIVERS GeForce Game Ready Driver WHQL

I updated both, but having issues after updating BIOS. See my other latest post in this thread for details if you can help more.

- - - Updated - - -

RJARRRPCGP said:

Well, I didn't see the PSU specified. And I believe that can cause loss of stability at stock clocks.

PSU is brand new; EVGA SuperNOVA 750 G3 80 Plus Gold

RJARRRPCGP · 03 Jun 2020

gb325 said:

PSU is brand new; EVGA SuperNOVA 750 G3 80 Plus Gold

You're golden! That's what my Ryzen rig has.

MrPepka · 03 Jun 2020

Disable Automatic Repair - Enable or Disable Automatic Repair in Windows 10

gb325 · 03 Jun 2020

MrPepka said:

Disable Automatic Repair - Enable or Disable Automatic Repair in Windows 10

I followed those steps and disabled automatic repair. On startup I now get an error error file windows system32 winload.efi with error code 0xc000000f and it will not allow me to press F8 for Startup Settings.