Marc Rafanelli's post(clipped):---

<<<<A few days ago she received the following error message:

lsass.exe - system error
An invalid HANDLE was specified
OK

The computer wouldn't boot up and then almost shut down on its
own, but when it came up again it did a disc check which she
declined. She then did a scan, and this is what it came up with
(and was quarantined):>>>>

I am sorry, but it is not clear whether the system is ok after the "She then did a scan, and this is what it came up with
(and was quarantined"

however, it appears that the system is infected with a variant of the "sasser" worm. so in addition to Sven's valuable input I would suggest you browse the following two URL'S which has some additional info and possibly a fix.

(1) http://tinyurl.com/89cks

(2)http://tinyurl.com/a4ox7

HTH and good luck---Venkat

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