Windows XP XP Pro log in /shut down and user problems

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lolo

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I have non networked pc running XP pro which is used for scientific data aquisition. I leave the PC and aquisition software running all the time but have up until recently locked the computer using ctrt+alt+delete as the system is in a remote location. I am to only legitimate user and have set myself up as an administrator.
I came to my machine yesterday and as usual found the machine on and my usual log in user name was replaced by my real name, and I found I could log in using either my real name or my usual log in name but with the same password for each.
Once logged on I found my data aquisition software closed and data lost - as if the system had crashed/power outage - although the machine was fully booted up.
I reset my data aquisition and went to lock the computer as usual but found this opened 'task manager' and had to use WIN + L to lock it.
Any idea what could have happened? Could a third party have accessed my system and set themselves up as a user/administrator? Any advice about finding out what happened and removing access for possible intruders?
 
lolo said:
No - it is not online, attached to the internet, nor networked in any way.
Click to expand...

Then I very much doubt it could be "infected" with any of the usual nasties. Someone must physically use the system to change any defaults.

'Logging in' as a user is restricted to what programs are setup for that user to run. Admin has no restrictions.

I have seen systems reboot for no apparent reason, one such instance was the fault of a failing power supply. If you don't have the system set to 'auto-logon' then you would be at the logon screen.

I never ceases to amaze me what computers can do, of their own free will. :)


:user:
 
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