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Windows 7: BSOD during "starting windows" after fresh install

07 Nov 2012   #1

windows 7 64 bit
BSOD during "starting windows" after fresh install

Hello forums people,

OS: Windows 7 professional
motherboard: Asus M4A78LT-M LE
CPU: AMD Athlon II x4

I've been wrestling with this all day.
Yesterday I re-installed Windows 7 professional 64 bit to get rid of 5 years of clutter. I was unable to install the OS with both 2GB sticks of RAM and my geForce 460 video card in.

I took out one RAM stick and the video card and installed the OS. Today, I am unable to start windows with the second RAM stick or the video card in.

To check the RAM sticks, I have put each RAM stick individually into each of the two RAM slots on the motherboard without a problem, I only have the problem when both sticks are in.

The BSOD occurs in the exact same way as when I boot with the video card installed. I get to the "starting windows" screen, the little colored balls animate for a moment and then freeze. Then I go to the bsod where I am told acpi.sys is responsible. The way that two pieces of hardware individually cause the same crash makes me think that it is not a problem with the video card or the motherboard physically either.

I have updated my BIOS today to the latest version. I have run the windows 7 startup repair from my intall CD, it failed at the "System Files Integrity Check and Repair" test with error code 0x490

I am unable to boot in safe mode with 2 RAM sticks or the video card.

I'm looking up cmd windows memory tests I can do, as well as updating the chipset now. I would appreciate any direction,


EDIT: I may have installed the "debug/checked" version of windows 7 professional. I have been reading that this throws errors instead of tolerating faults like a friendly OS should.

My System SpecsSystem Spec
08 Nov 2012   #2
Capt.Jack Sparrow

Windows 7 Ultimate - 64-bit | Windows 8 Pro - 64-bit

Hello there!

It does sound like Hardware but the best way to test the RAM is using the program called MemTest86+ follow this article Run Hardware Diagnostic : Hardware Diagnostic | Captain Debugger (RAM and GPU)

This driver Bs_def.sys i.e. BIOS Flash Driver is a driver file from company AsusTek Computer Inc. maybe it's good idea to re-flash the BIOS.


Debug session time: Thu Nov  8 05:48:46.112 2012 (UTC + 5:30)
Loading Dump File [C:\Users\Shyam\SysnativeBSODApps\110712-4291397729-01.dmp]
Built by: 7601.17514.amd64chk.win7sp1_rtm.101119-1850
System Uptime: 49 days 16:37:00.011 (checked kernels begin at 49 days)
BugCheck 3B, {c0000420, fffff8000270a11b, fffff88007270a00, 0}
*** WARNING: Unable to verify timestamp for BS_DEF.sys
*** ERROR: Module load completed but symbols could not be loaded for BS_DEF.sys
Probably caused by : BS_DEF.sys ( BS_DEF+1109 )
Bugcheck code 0000003B
Arg1: 00000000c0000420, Exception code that caused the bugcheck
Arg2: fffff8000270a11b, Address of the instruction which caused the bugcheck
Arg3: fffff88007270a00, Address of the context record for the exception that caused the bugcheck
Arg4: 0000000000000000, zero.
BiosVersion = 0507   
BiosReleaseDate = 02/23/2010
SystemManufacturer = System manufacturer
SystemProductName = System Product Name



BS_DEF.sys                  Wed Jun 24 13:09:01 2009 (4A41D815)
HpSAMD.sys                  Sat May 29 00:04:43 2010 (4C000CC3)
L1C62x64.sys                Wed Apr  1 10:39:17 2009 (49D2F6FD)
MegaSR.sys                  Tue May 19 06:55:34 2009 (4A120A8E)
SiSRaid2.sys                Wed Sep 24 23:58:22 2008 (48DA86C6)
adp94xx.sys                 Sat Dec  6 05:18:25 2008 (4939BDC9)
adpahci.sys                 Tue May  1 23:00:28 2007 (46377934)
adpu320.sys                 Wed Feb 28 05:36:46 2007 (45E4C796)
amdsata.sys                 Fri Mar 19 06:24:45 2010 (4BA2CB55)
amdsbs.sys                  Sat Mar 21 00:06:05 2009 (49C3E215)
amdxata.sys                 Fri Mar 19 21:48:34 2010 (4BA3A3DA)
arc.sys                     Fri May 25 02:58:53 2007 (46560395)
arcsas.sys                  Thu Jan 15 00:55:45 2009 (496E3C39)
atikmdag.sys                Fri Apr 24 16:21:57 2009 (49F199CD)
elxstor.sys                 Wed Feb  4 04:39:01 2009 (4988CE8D)
iaStorV.sys                 Fri Jun 11 06:16:52 2010 (4C11877C)
iirsp.sys                   Wed Dec 14 03:17:51 2005 (439F4187)
intelide.sys                Sat Nov 20 12:40:11 2010 (4CE77453)
lsi_fc.sys                  Wed Dec 10 04:09:03 2008 (493EF387)
lsi_sas.sys                 Tue May 19 05:50:10 2009 (4A11FB3A)
lsi_sas2.sys                Tue May 19 06:01:37 2009 (4A11FDE9)
lsi_scsi.sys                Fri Apr 17 03:44:11 2009 (49E7ADB3)
megasas.sys                 Tue May 19 06:39:41 2009 (4A1206D5)
nfrd960.sys                 Wed Jun  7 02:41:40 2006 (4485EF8C)
nvraid.sys                  Sat Mar 20 02:29:45 2010 (4BA3E5C1)
nvstor.sys                  Sat Mar 20 02:16:51 2010 (4BA3E2BB)
ql2300.sys                  Fri Jan 23 04:35:01 2009 (4978FB9D)
ql40xx.sys                  Tue May 19 06:48:21 2009 (4A1208DD)
sisraid4.sys                Thu Oct  2 03:26:02 2008 (48E3F1F2)
stexstor.sys                Wed Feb 18 04:33:43 2009 (499B424F)
vsmraid.sys                 Sat Jan 31 06:53:20 2009 (4983A808)

BS_DEF.sys - this driver hasn't been added to the DRT as of this run. Please search Google/Bing for the driver if additional information is needed.
Update all the drivers older 2009
Check this article to know how to update the Drivers : How to Update Drivers on Windows 7
My System SpecsSystem Spec
08 Nov 2012   #3
Microsoft MVP

Windows 7 Ultimate X64 SP1

Hi Welcome to Seven Forums.
To help us help you would you please add your systems specs? Here's how: System Info - See Your System Specs
Under System Manufacturer/Model Number add whether it is a desktop or laptop and whether self built.

Log in to Seven Forums and you will be able to transfer the info directly to the specs page in your profile from within the System Info app.
After doing this your specs will be available in each of your posts. Click on My system Specs in the lower left of this post to see how it should look.:)
Full instructions are in the tutorial.
My System SpecsSystem Spec


 BSOD during "starting windows" after fresh install

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