Hola alex2004, bienvenid@.
Esos síntomas son los de un nuevo virus (el Sasser). Si vas al foro de Windows encontrarás varios hilos con el tema.
Cita: Full descriptions:
http://securityresponse.symantec.com...sser.worm.html http://securityresponse.symantec.com...er.b.worm.html Key Symptoms:
1) System so slow as to be almost unusable
2) Presense of files:
c:\WINNT\avserve.exe or c:\WINNT\avserve2.exe or #####_up.exe or ####_up.exe where # equals a random number
3) Presense of Registry Key with value:
"avserve.exe"="c:\WINNT\avserve.exe" or "avserve2.exe"="c:\WINNT\avserve2.exe" in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Curr entVersion\Run
4) Possibly a system crash accompanied by the warning messages
5) Presense of processes:
avserve.exe or avserve2.exe or any process with a name consisting of 4 or 5 digits followed by _up.exe (eg 74354_up.exe