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 Restart Loop - Starts in SafeMode

03 Oct 2010   #1
Microsoft MVP

BSOD Restart Loop - Starts in SafeMode

My friend in OKC can't start his computer normally. Within a few seconds it blacks out then bluescreens with "Bad Pool Header."

Nothing in Event log besides single bugcheck at startup and then cascade failing services.

Edit: We were able to finally SysRestore to a month back by using DVD instead of Advanced Boot Tools WinRE. Now running Repair Install with Compatibility Check at 20 minutes and counting...

Would really appreciate knowing what is causing this to get rid of it.

My System SpecsSystem Spec
04 Oct 2010   #2

Microsoft Window 7 Professional 32 bit

Hi friend!

All of these seem to be caused by ATWPKT2.SYS, which when I search, it is belonged to The process ATW Protocol Driver belongs to the software AOL Connectivity Services or ATW Protocol Driver by America Online ( - Welcome to AOL).
Your friend might want to go to safe mode to uninstall the program or services of that to see if anything change.
This is an AOL problem. The computer reboots and reboots and reboots. The solution is to boot in safe mode by pressing F8 during the boot. Delete or rename the files ATWPKT2.SYS and ATWPKT2.VXD which are located in an AOL directory under \PROGRAM_FILES\COMMON_FILES . These are something to do with the AOL dialer. AOL still works if deleted.
BugCheck 19, {20, 87f089b0, 87f089c8, 8030004}

Probably caused by : ATWPKT2.SYS ( ATWPKT2+1613 )

Followup: MachineOwner
My System SpecsSystem Spec
04 Oct 2010   #3
Microsoft MVP


Thanks. We deleted those files in AOL from desktop which was SysRestored from DVD.

Now AOL is causing the blackout then bluescreen when we start it. Installing AOL 9.5 after Revo'ing 9.0.

Blacks out then bluescreens upon completion of install of AOL 9.5.

Removing the two files from AOL 9.5.
My System SpecsSystem Spec

04 Oct 2010   #4

Microsoft Window 7 Professional 32 bit

Yeah, let's try to delete it completely and see how it goes. If your friend able to get to safe mode, let him turn off the service at startup (run-->msconfig). I think AOL is the only trouble here and we just need to get rid of it
My System SpecsSystem Spec
04 Oct 2010   #5
Microsoft MVP


AOL 9.5 blacks out desktop then bluescreens while trying to connect even with the two files deleted from it.

Finally after 10 years I might have gotten him to get rid of it and make AOL his IE8 homepage instead.

Spent some time trying to figure out how to excise the AOL connection service, but it seems impossible. AOL can't be happy just being a normal browser without its Frankensteinian connection appendages.
My System SpecsSystem Spec

 BSOD Restart Loop - Starts in SafeMode

Thread Tools

Similar help and support threads
Thread Forum
Help, Windows 7 Stuck in safemode loop CLASSPNP.sys
I went into msconfig on the work laptop and changed the boot to safe boot network, as soon as I went to boot up the laptop and get into safe mode, the laptop freezes at CLASSPNP.sys then I have to reboot. I really need to get it to boot back into windows normally, but even selecting "Start...
General Discussion
Stuck in Startup Repair Loop after running Avast/No safemode option
Okay, I'm looking for anyone to help me... this is sort of a long story. First I noticed my background picture had disappeared and was just black. My immediate thought was oh great, I bet I have a virus. Other than that there were no other noticeable symptoms. Anyway, I ran Spybot and it found...
BSOD Help and Support
Windows startup BSOD loop, Safemode -ok
I recently built a new computer. It was working great until I tried messing around with the overclock settings. I had my i7-2600k+ overclocked to 5000 mhz on my asus p8z68-v pro. It would boot windows, but while I ran windows my asus overclocker ap`s probe II was saying the vcore power was...
BSOD Help and Support
BSOD Restart loop
Hello everyone, Windows 7 professional x64 Full retail Version Hardware 3 months old Install 3 months old Brand new hardware, had a few BSOD previously but now the frequency has increased to the point that I can't even start the computer. So now I came for help. Unfortunately I was unable...
BSOD Help and Support
Vista only starts in safemode, normal start chrashes ?
hi ! i got a problem with Vista, a normal start causes a crash (+memdump), it only starts in safemode, any ideas on how to repair it ? i have already ran the installation-disk several times. what´s a little bit mysterious is the fact that last time i used that Vista-partition it worked...
Installation & Setup

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 08:18.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App