Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: BSOD random times, IRQL_GT_ZERO_AT_SYSTEM_SERVICE 0x0000004a

15 Dec 2013   #1

Windows 7 Professional 64bit
BSOD random times, IRQL_GT_ZERO_AT_SYSTEM_SERVICE 0x0000004a

This is a newly (just this month!) build custom pc however since yesterday I have been getting BSOD. I have attached the grab all from SF diagnostic tool. I am unsure as it says its a problem with ntoskrnl.exe.

System Specs:
MoBo: ASRock FM2A75M Pro4+
Video card: None
Processor: AMD A6-6400k
Memory: GSkill Sniper 8GB
Storage: WD 1TB

My System SpecsSystem Spec
16 Dec 2013   #2

Microsoft Community Contributor Award Recipient

Windows 10 Home 64Bit

Welcome to the Forum.

Bit Defender causes BSOD's. Please remove it for testing purpose. Use Microsoft Security Essentials.

Recommended from a strict BSOD perspective, compatibility & stability compared to other security software:

Microsoft Security Essentials - Free Antivirus for Windows

Malwarebytes - Free

Good and Free system security combination.

Reduce items at start-up: Startup Programs - Change

Perform a clean boot: Troubleshoot Application Conflicts by Performing a Clean Startup

Run a System file check (SFC): SFC /SCANNOW Command - System File Checker

Scan with Kaspersky TDSSKiller:Anti-rootkit utility TDSSKiller

ESET online scanner: Free Online Virus Scanner | ESET

Run Disk Check on your Hard Drive(s): Disk Check

Check for heating issues using Speccy or HWmonitor

Upload a screen shot: Screenshots and Files - Upload and Post in Seven Forums

Microsoft (R) Windows Debugger Version 6.2.9200.20512 AMD64
Copyright (c) Microsoft Corporation. All rights reserved.

Loading Dump File [C:\Users\USER\Downloads\SF_15-12-2013\SF_15-12-2013\121513-16582-01.dmp]
Mini Kernel Dump File: Only registers and stack trace are available
Symbol search path is: SRV*c:\symbols*
Executable search path is: 
Windows 7 Kernel Version 7601 (Service Pack 1) MP (2 procs) Free x64
Product: WinNt, suite: TerminalServer SingleUserTS
Built by: 7601.18247.amd64fre.win7sp1_gdr.130828-1532
Machine Name:
Kernel base = 0xfffff800`02e67000 PsLoadedModuleList = 0xfffff800`030aa6d0
Debug session time: Mon Dec 16 00:58:05.143 2013 (UTC + 6:00)
System Uptime: 0 days 0:05:30.392
Loading Kernel Symbols
Loading User Symbols
Loading unloaded module list
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *
Use !analyze -v to get detailed debugging information.
BugCheck 4A, {7714132a, 2, 0, fffff88009c2cb60}
Probably caused by : ntkrnlmp.exe ( nt!KiSystemServiceExit+245 )
Followup: MachineOwner
1: kd> !analyze -v
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *
Returning to usermode from a system call at an IRQL > PASSIVE_LEVEL.
Arg1: 000000007714132a, Address of system function (system call routine)
Arg2: 0000000000000002, Current IRQL
Arg3: 0000000000000000, 0
Arg4: fffff88009c2cb60, 0
Debugging Details:

PROCESS_NAME:  vsserv.exe
00000000`7714132a ??              ???
LAST_CONTROL_TRANSFER:  from fffff80002edc169 to fffff80002edcbc0
fffff880`09c2c928 fffff800`02edc169 : 00000000`0000004a 00000000`7714132a 00000000`00000002 00000000`00000000 : nt!KeBugCheckEx
fffff880`09c2c930 fffff800`02edc0a0 : 00000000`00000a74 fffff880`09c2cb60 00000000`00000000 fffff800`031c6383 : nt!KiBugCheckDispatch+0x69
fffff880`09c2ca70 00000000`7714132a : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiSystemServiceExit+0x245
00000000`21abfcc8 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0x7714132a

fffff800`02edc0a0 4883ec50        sub     rsp,50h
SYMBOL_NAME:  nt!KiSystemServiceExit+245
FOLLOWUP_NAME:  MachineOwner
IMAGE_NAME:  ntkrnlmp.exe
FAILURE_BUCKET_ID:  X64_RAISED_IRQL_FAULT_vsserv.exe_nt!KiSystemServiceExit+245
BUCKET_ID:  X64_RAISED_IRQL_FAULT_vsserv.exe_nt!KiSystemServiceExit+245
Followup: MachineOwner
My System SpecsSystem Spec
16 Dec 2013   #3

Windows 7 Professional 64bit

Hi koolkat77,

Thanks for your advice it is much appreciated

I decided to remove Bitdefender and install Avast based on your advice and what I have read about Bitdefender instability issues. So far it has been great, I will leave Avast on and see the difference, if I get BSOD I will go onto MSE.

I can't believe Bitdefender being this major Antivirus firm, they have such bad stability issues disappointed. I have used Kaspersky and not had any problem.
My System SpecsSystem Spec


 BSOD random times, IRQL_GT_ZERO_AT_SYSTEM_SERVICE 0x0000004a

Thread Tools

Similar help and support threads
Thread Forum
BSOD at random times, at least 3 times per week. Win 7 64 Ultimate
This is my custom build computer of 4 - 5 years. The past year or so i keep getting random BSOD. There are times right after i do a windows update, the very next day my computer will crash. I am running the latest nvidia drivers, and also run windows update. Some times the error says Memory...
BSOD Help and Support
I have been getting random crashes of the laptop (BSOD) with IRQL_GT_ZERO_AT_SYSTEM_SERVICE 5/6 times and one BAD_POOL_CALLER in the past 2 months. Another laptop, a Dell inspiron also running Bitdefender Total 2015 has had similar BSOD though I am only uploading my primary laptop (a Vaio) files...
BSOD Help and Support
Random BSOD problems in the past 2 days. Random errors at random times
Three days ago my water cooling failed (got up to 77C while gaming is when I noticed the problem as my CPU should not go over 62C). I decided to install an aftermarket heatsink instead of a new water cooling system ,and add a few more fans just to make sure my whole motherboard was getting plenty...
BSOD Help and Support
Since 28 March of this year I have been getting random blue screens. They have happened when playing games (several different ones), watching YouTube videos, accessing my NAS and even while the computer was sleeping. At the thread says these new errors all report: IRQL_GT_ZERO_AT_SYSTEM_SERVICE...
BSOD Help and Support
BSoD at random times and pink graphics at times,
Hello, New member here and thanks in advance for looking. I have a home built w7 Home Premium box we use almost exclusively for Windows Media Center. I started getting bsod's about a month ago and before that got distorted *pinkish* video on restart or bootup at times. Tried using...
BSOD Help and Support
BSOD at random times, 2 times/day in the last 4 days
Hi, I have started getting BSODs twice a day at random moments on my computer in the last 4 days. I've tried to figure out the reason for the BSODs but I'm not sure. I often get the * Hardware failure * bsod. Now I know these can be caused by a number of things, so that is why I included with...
BSOD Help and Support

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 02:12.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App