hi guys, its been a while but all's been sweet in the land of the saiyan! no tinkering, no problem!! until now..!!:suspiciou used the laptop last night, no probs. tried to start it this morning - "lsass.exe - operation failed" or something like that. i've had a quick look through a few forums & stuff, some reckon its a virus, some not. some recommend a full format, others suggest simply replacing the 'system' file in sys32 with the one from the recovery folder, have a look. http://www.computing.net/security/wwwboard/forum/16358.html i'm pretty much backed up so losing anything on my hard drive is not an issue.. i'd just rather not start pissing about with drivers and email settings, you know? the above fix is a cinch, but it seems to me that the file size in "windows\system32\config\system" is around 6MB but the one in "windows\repair\system" seems to only be around 1.5MB. so i suppose i'm asking if this is a legit fix or not.