Started my computer.
Windows login pages comes up requesting my password.
I go to get something to eat (1omins or so).
When I come back my desktop is showing, not the Windows login page requesting my password.
I don't have the greatest memory but I am fairly certain ( I could be wrong, however) that I never put my password in.
I'm very concerned.
Currently running Malwarebytes and then Norton Security Scan, will post results.
Advice?
Any way to tell who put the password in?

Hi Jsizzle,

There's no way to tell who put in the password. Is there anyone in the house who could have done it (even if you think they don't know your password)?

I would test this a couple of additional times to see if it repeats. Does the computer continue to login automatically after 10 minutes or so or does it remain on the logon screen until you enter the password (give it 30 minutes or so)? Please do check this a few times and post the results. How many users are there on the computer? How many are standard users and how many are administrators? Is the built-in administrator account enabled? Is the guest account enabled? What type of account is your account?

Running the scans (be sure to update them first and do full scans) is an excellent idea and I would have suggested it if you weren't already doing it. Please do post the results (screenshots or attaching copies of the logs would be fine).

After this (and the recommendations and possibilities Richard suggested above), we'll see where we stand and what if anything needs to be done. Try not to be too concerned. We'll figure this out if it repeats, we'll bring in a security expert if the scans turn up anything nasty, you'll verify nobody else in the house did it (somehow), you'll try Richard's suggestions, and if it doesn't continue to occur and none of these things turn up anything suspicious, then maybe you did forget and there's no problem at all. Please do answer all our questions in your next post.

Thanks and good luck!

Norton Scan Results:

Scan Stats:
Scan Time: 6691 seconds
Scan Options:
Scan Targets: C:\, D:\
Counts:
Total items scanned: 673,332
- Files & Directories: 667,065
- Registry Entries: 594
- Processes & Start-up Items: 5,441
- Network & Browser Items: 224
- Other: 4
- Trusted Files: 0
- Skipped Files: 21,060

Total security risks detected: 1
Total items resolved: 1
Total items that require attention: 0

Resolved Threats:
Trojan Horse
Type: Compressed
Risk: High (High Stealth, High Removal, High Performance, High Privacy)
Categories: Virus
Status: Fully Resolved







Malwarebytes Scan:
Malwarebytes' Anti-Malware 1.50.1.1100
Malwarebytes

Database version: 5592

Windows 6.0.6002 Service Pack 2
Internet Explorer 8.0.6001.18999

1/24/2011 8:35:00 PM
mbam-log-2011-01-24 (20-35-00).txt

Scan type: Full scan (C:\|D:\|)
Objects scanned: 358100
Time elapsed: 1 hour(s), 13 minute(s), 1 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 2
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 8
Files Infected: 2

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_CLASSES_ROOT\.pox (Rogue.FixTool) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\pofile (Rogue.FixTool) -> Quarantined and deleted successfully.

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
c:\program files\perfect optimizer (PUP.PerfectOptimizer) -> Not selected for removal.
c:\program files\perfect optimizer\Backup (PUP.PerfectOptimizer) -> Not selected for removal.
c:\program files\perfect optimizer\Backup\application (PUP.PerfectOptimizer) -> Not selected for removal.
c:\program files\perfect optimizer\Backup\Registry (PUP.PerfectOptimizer) -> Not selected for removal.
c:\program files\perfect optimizer\Backup\Registry\firstbackup (PUP.PerfectOptimizer) -> Not selected for removal.
c:\program files\perfect optimizer\Backup\Registry\fullbackup (PUP.PerfectOptimizer) -> Not selected for removal.
c:\program files\perfect optimizer\Backup\Service (PUP.PerfectOptimizer) -> Not selected for removal.
c:\program files\perfect optimizer\Temp (PUP.PerfectOptimizer) -> Not selected for removal.

Files Infected:
c:\Users\\downloads\perfectoptimizer_5.2.6.exe (PUP.PerfectOptimizer) -> Not selected for removal.
c:\program files\perfect optimizer\perfectoptimizer.ini (PUP.PerfectOptimizer) -> Not selected for removal.


There was no one in the house at the time who could have done it.
I am the only one who uses the computer.

I have the one and only administrator account.

The guest account is turned off.
The built-in administrator account is not enabled.




Thanks,
Look forward to your replies.

Hi try and see if your password auto-login is check marked in 'Ease of Access' centre.

When I try to alter Automatic Login I get this screen.

But I am almost positive I do not have Automatic Login enabled. At my Login Screen, you have to type in a login name and then password. You don't select a user then put password in.

Thanks for all the help. I'll keep you updated if anything happens.