Inactive Security Services Driver (x86) service failed to start...

[Inactive] Security Services Driver (x86) service failed to start...

Hi, everybody: I use Win XP SR2 + Firefox + Thunderbird. It is Pentium 4, 1800 G, 1 G ram, 3 hdd (all 340 G)


Please help me: either I need to reinstall the whole OS -- or I have some chances to repair it without re-installation?

The Problem: Computer started behaving strangely, blue death, reboots during downloading (both via Firefox and FlashGet) -- and even without downloading. I often receive a message, that "Internet Explorer failed to start" -- though I practically do not use IE. Installation of IE 8 did not improve anything.

I have Norton Antivirus + Norton Firewall and update them.

My comp is never connected to the Internet, unless I need it; after that is disconnected.

Several times I received an error message immediately after reboot in Event Viewer:
----------------------------
"Event Type: Error
Event Source: Service Control Manager
Event Category: None
Event ID: 7000
Date: 4/1/2011
Time: 12:51:37 PM
User: N/A
Computer: PEN4
Description:
The Security Services Driver (x86) service failed to start due to the following error:
The system cannot find the file specified. "
------------------

Also I had a strange error message about a strange service SSHNAS. "Event ID: 7023 The SSHNAS service terminated with the following error: The specified module could not be found." I removed it (disabled it). Still comp reboots erratically.

I tried to check msconfig: disabled all (except MS) -- in this case I do not have any connection to the Web at all.

My ISProvider's technical assistance also does not know what to do with the problem.

Google redirected me to your forum.

It was unexpected to me, as I use Norton antivirus (last update was this week) + Norton FireWall.

I did all 4 steps you advised:
Here are logs:

-----------------
/*1*/
Malwarebytes' Anti-Malware 1.50.1.1100
www.malwarebytes.org

Database version: 5363

Windows 5.1.2600 Service Pack 2
Internet Explorer 8.0.6001.18702

4/1/2011 12:49:15 PM
mbam-log-2011-04-01 (12-49-15).txt

Scan type: Quick scan
Objects scanned: 137033
Time elapsed: 5 minute(s), 52 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 1
Registry Keys Infected: 7
Registry Values Infected: 0
Registry Data Items Infected: 4
Folders Infected: 1
Files Infected: 5

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
c:\WINDOWS\system32\antiwpa.dll (PUP.Wpakill) -> Not selected for removal.

Registry Keys Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\Antiwpa (PUP.Wpakill) -> Not selected for removal.
HKEY_CURRENT_USER\SOFTWARE\ADWare (Malware.Trace) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\LEO0WTUNO7 (Trojan.FakeAlert) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Handle (Malware.Trace) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\Software\Visicom Media (Adware.KeenValue) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\StimulProfit (Adware.Agent) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\SSHNAS (Trojan.Renos) -> Quarantined and deleted successfully.

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\AntiVirusDisableNotify (PUM.Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\FirewallDisableNotify (PUM.Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\UpdatesDisableNotify (PUM.Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\scrfile\shell\open\command\(default) (Broken.OpenCommand) -> Bad: (NOTEPAD.EXE %1) Good: ( "%1" /S) -> Quarantined and deleted successfully.

Folders Infected:
c:\documents and settings\cH_5zo\application data\FieryAds (Adware.FieryAds) -> Quarantined and deleted successfully.

Files Infected:
c:\WINDOWS\system32\antiwpa.dll (PUP.Wpakill) -> Not selected for removal.
c:\documents and settings\cH_5zo\application data\avdrn.dat (Malware.Trace) -> Quarantined and deleted successfully.
c:\documents and settings\cH_5zo\application data\fieryads.dat (Adware.FieryAds) -> Quarantined and deleted successfully.
c:\WINDOWS\Tasks\{35dc3473-a719-4d14-b7c1-fd326ca84a0c}.job (Trojan.Downloader) -> Quarantined and deleted successfully.
c:\WINDOWS\system32\winlogon.del (Heuristics.Reserved.Word.Exploit) -> Quarantined and deleted successfully.


I also did GMER + mbrcheck + dds

Thank you in advance