ntoskrnl.exe BSOD GA-EP45-UD3R

[Poonagez]

I keep getting this ntoskrnl.exe BSOD at random times. I've tried to reinstall windows, update all drivers, ran memtest on RAM for 24 hours. I'm also using the optimized settings on the BIOS. Anybody have any ideas why this is happening? I don't think its overheating since on full load its only 50c.

Thermaltake Purepower W0100RU 500W
GIGABYTE GA-EP45-UD3R
G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500)
Intel Core 2 Duo E8400 Wolfdale
SAPPHIRE Radeon HD 4850

[profJim]

Re: ntoskrnl.exe BSOD GA-EP45-UD3R

Using OPTIMIZED settings often over-volts some of the settings in the bios. It's best to manually set the following voltage settings:

CPU Vcore <========= manually set this to the value shown in the bios
CPU Termination <===== manually set this to the value shown in the bios
MCH Core <========== 1.20 should work for you
DRAM voltage <======= 2.0 - 2.1 volts should work, don't exceed your memory's max voltage spec

Change the following from AUTO to the value to the left in the bios:
CPU PLL
ICH I/O
ICH Core

All of these settings are accessed from the MIT section in your bios. If you're still having problems, copy LSDMEasap's generic bios template and fill in all the values with your current bios settings, and post these settings.

There are quite a few threads that show their successful bios settings with your cpu and an EP45 mobo. Don't use bios settings from systems that have been overclocked.

Check the Bios Tweaking Gude for more info and post any further questions that you have.

[Poonagez]

Re: ntoskrnl.exe BSOD GA-EP45-UD3R

I've tried that and it doesn't boot successfully.

[aquax]

Re: ntoskrnl.exe BSOD GA-EP45-UD3R

I keep getting this ntoskrnl.exe BSOD at random times. I've tried to reinstall windows, update all drivers, ran memtest on RAM for 24 hours. I'm also using the optimized settings on the BIOS. Anybody have any ideas why this is happening? I don't think its overheating since on full load its only 50c.

Thermaltake Purepower W0100RU 500W
GIGABYTE GA-EP45-UD3R
G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500)
Intel Core 2 Duo E8400 Wolfdale
SAPPHIRE Radeon HD 4850

I get the ntoskrnl.exe black screen, when I apply too much/low MCH reference or incorrect ram timmings
Change "Performance Enhance" to Standard

[profJim]

Re: ntoskrnl.exe BSOD GA-EP45-UD3R

Make the following changes in your bios:

PCI Express Frequency (MHz) ...........: 100
Performance Enhance .....................: Standard
Extreme Memory Profile (X.M.P.) .......: Disabled

You might need to set MCH Core to 1.22 or 1.24. If this doesn't help, try setting it to 1.05 volts.

Please include a link to your specific memory modules. It is best if you include a bios template with your latest settings.

What bios version are you using?
Is your mobo rev 1.0 or 1.1?
Which operating system are you running?

[Poonagez]

Re: ntoskrnl.exe BSOD GA-EP45-UD3R

Robust Graphics Booster ...............: [Auto]
CPU Clock Ratio .......................: [ 9]
Fine CPU Clock Ratio...................: +0.0
CPU Frequency .........................: 3.00GHz

Clock Chip Control
Standard Clock Control
CPU Host Clock Control.................: [Disabled]
CPU Host Frequency (Mhz) ..............: 333Mhz
PCI Express Frequency (Mhz) ...........: [Auto]

C.I.A.2 ...............................: [Disabled]

Advanced Clock Control
CPU Clock Drive........................: 800mV
PCI Express Clock Drive................: 900mV
CPU Clock Skew (ps)....................: 0ps
MCH Clock Skew (ps)....................: 0ps

DRAM Performance Control
Performance Enhance....................: [Turbo]
Extreme Memory Profile (X.M.P.)........: [Disabled]
(G)MCH Frequency Latch.................: [Auto]
System Memory Multiplier ..............: [Auto]
Memory Frequency (Mhz) ................: 1022
DRAM Timing Selectable ................: [Auto]

Standard Timing Control
CAS Latency Time.......................: 6
tRCD ..................................: 6
tRP'...................................: 6
tRAS...................................: 18

Advanced Timing Control
tRRD...................................: 4
tWTR...................................: 4
tWR....................................: 68
tRFC...................................: 4
tRTP...................................: 5
Command Rate (CMD) ....................: 0

Channel A
Static tRead Value.....................: 8
tRD Phase0 Adjustment..................: [Auto]
tRD Phase1 Adjustment..................: [Auto]
tRD Phase2 Adjustment .................: [Auto]
tRD Phase3 Adjustment..................: [Auto]

Trd2rd(Different Rank).................: [Auto]
Twr2wr(Different Rank).................: [Auto]
Twr2rd(Different Rank).................: [Auto]
Trd2wr(Same/Diff Rank).................: [Auto]

Dimm1 Clock Skew Control...............: [Auto]
Dimm2 Clock Skew Control...............: [Auto]
DDR Write Training.....................: [Auto]

Channel B
Static tRead Value.....................: 8
tRD Phase0 Adjustment..................: [Auto]
tRD Phase1 Adjustment..................: [Auto]
tRD Phase2 Adjustment .................: [Auto]
tRD Phase3 Adjustment..................: [Auto]

Trd2rd(Different Rank).................: [Auto]
Twr2wr(Different Rank).................: [Auto]
Twr2rd(Different Rank).................: [Auto]
Trd2wr(Same/Diff Rank).................: [Auto]

Dimm1 Clock Skew Control...............: [Auto]
Dimm2 Clock Skew Control...............: [Auto]
DDR Write Training.....................: [Auto]

Motherboard Voltage Control
Voltage Type...........................: [Manual]

CPU---------------------Normal-----------Current

Load Line Calibration..................: [Disabled]
CPU Vcore...............1.25000V.......: 1.25000V
CPU Termination.........1.200V.........: 1.200V
CPU PLL.................1.500V.........: 1.500V
CPU Reference...........0.760V.........: [Auto]

MCH/ICH
MCH Core................1.100V.........: 1.220V
MCH Reference...........0.760V.........: [Auto]
MCH/DRAM Reference......0.900V.........: [Auto]
ICH I/O.................1.500V.........: 1.500V
ICH Core................1.100V.........: 1.100V

DRAM
DRAM Voltage............1.800V.........: 2.000V
DRAM Termination........0.900V.........: [Auto]
Channel A Reference.....0.900V.........: [Auto]
Channel B Reference.....0.900V.........: [Auto]

Advanced Settings
Limit CPUID Max. to 3..................: [Disabled]
No-Execute Memory Protect..............: [Enabled]
CPU Enhanced Halt (C1E)................: [Disabled]
C2/C2E State Support...................: [Disabled]
x C4/C4E State Support.................: [Disabled]
CPU Thermal Monitor 2(TM2) ............: [Enabled]
CPU EIST Function......................: [Disabled]
Virtualization Technology..............: [Disabled]

Integrated Peripherals
Legacy USB Storage Detect .............: [Enabled]

I'm using Vista Ultimate 32bit, Bios version is F5, and i'm not sure what my rev is.I can't get it stable when I use different settings, It gets stuck in a cycle reboot for about 5 times then when I return to BIOS it tells me that there was a bad overclock or settings.

[profJim]

Re: ntoskrnl.exe BSOD GA-EP45-UD3R

To eliminate the memory as the problem, you can run the following tests:

1) Test with the memory in slots #2 & #4.

2) Set System Memory Multiplier to 2.40B, this will underclock you memory to 800 MHz.

3) Test with only 1 memory module in the slot nearest the cpu.

4) Test with a different set of memory modules.

Have you done any stability testing Memtest86+, Prime95, OCCT, or Orthos?