BleepingComputer.com: msupdt.exe (trojan)

hi I'm using windows vista home premium, few days a go when I boot my computer a pop up appear
C:\\windows\system32\msupdt.exe
The NTVDM CPU has encountered an illegal instruction.
CS:1335 IP:3539 OP:0f c7 00 00 e7 Choose to 'Close' to terminate the application

thought it's nothing, but after the 3rd day the pop up still there, so I tried to search about this msupdt.exe, found out that it is a trojan. then I found way to fix it is using the sdfix so I download it.

the problem is, when I enter the safeboot mode and I try to run the bat, the sdfix just flash and off, tried many times but the problem persist. I tried to fix the patch as suggested but no good
(I already tried to perform scan using avast and found the trojan file and delete it but after that it appear again)


so anyone can help me??

problem solved
use Malwarebytes' Anti-Malware