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Help! Cannot complete bootup in XP SP2 under any modes...


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#1 lestatar

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Posted 31 August 2010 - 01:41 AM

Hi all, desperate for some help here - hope all is well as I have not had to post here in ages...

WINXP PRO SP2 [all patches current]

In a nutshell, I believe that my issue is related to the problem described here, with SPTD.sys and a registry setting:
http://www.greatis.com/security/What%20is%...3%23%23.sys.htm

and

http://www.daemonpro-help.com/en/problems_...d_problems.html

I recall recently deleting a file with this similar name: SPTD9885.SYS from my system.

Things were running fine for several days. However, tonight I simply restarted my machine and now I am unable to boot into XP either normally or in Safe Mode, no success under any profiles.

The behavior is one I have never encountered before: The login screen appears normally in all modes, I can attempt to log in under all profiles, but once the process begins and before the START bar or desktop icons appear, the machine immediately initiates a LOGOFF/SHUTDOWN. The last message I see is CLOSING NETWORK CONNECTIONS and I am thrown back into the login/profiles screen.

- There is no blue screen error.
- This infinite loop occurs in all boot modes.

I have:
- Done an inplace REPAIR INSTALLATION with no results - I still cannot complete the XP bootup sequence after login.
- I do not have Recovery Console installed [and in fact have been unable to install it - so I could use help with this as well in case this could be productive].

I have reason to believe that this may be the cause of my problems as the SPTD.sys file described is installed on my system [I do believe I have Daemon tools installed, though I never really use it].

I have been able to successfully rename the SPTD.SYS file in c:\window\system32\ to SPTD.OLD but I suspect the registry entries are still causing my issues as the inability to complete bootup persists.

Formatting the machine is not an option - using XP CD I can see my data/partitions/disks are fine. CHKDSK /R has been successfully run with no errors.

I am unclear how to access the registry to locate and delete the entries [or even to attempt] the steps in either of the possible solutions above.

Can someone please assist me with step-by-step instructions on how to access my registry from outside of XP so I can try and find and remove any of the offending entries?

Or am I going about this completely wrong and there are other options to explore?

Desperately need help/advice.

tia,
-lestatar

EDIT: I forgot to add that one of the first things I already attempted was to use F8 and select Last Known Good Configuration to try and enter XP. The result is the same as I described above.

Edited by lestatar, 31 August 2010 - 09:08 AM.


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#2 hamluis

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Posted 31 August 2010 - 08:44 AM

I've asked one of our more knowledgeable staff members to take a look and have posted your thread on our Unbootable Computers thread.

Please be patient :thumbsup:.

Louis

#3 lestatar

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Posted 31 August 2010 - 09:05 AM

Halmuis: Thank you so very much. I am both encouraged and concerned that my issue seems to require escalation :D

I will avoid taking any further measures for the moment and await some guidance.

FYI, I posted my issue on ComputerHope as well - for the intention of avoiding duplication of efforts/suggestions, I am linking to that thread as well here:

http://www.computerhope.com/forum/index.ph...c,109581.0.html

Thank you so much again.
-lestatar

#4 lestatar

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Posted 31 August 2010 - 05:37 PM

All/mods, this topic can be closed or marked SOLVED.

I was able to resolve my issue with guidance from ##windows on freenode irc.

For information sake, the steps described starting here [especially from Step 4 on] were 100% successful in my case. Following them to the letter allowed me to to fully boot into SAFE mode and then make the registry changes indicated in the links in my first post.

http://saveme.danfischbach.com/safemode

Thanks so much again and hopefully this info may be useful to others who encounter the same thing.

regards,
-lestatar

#5 hamluis

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Posted 31 August 2010 - 06:36 PM

Glad you were able to resolve it, happy computing :thumbsup:.

Louis




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