Oui, ça n'est pas facile.
Voilà ce qui est indiqué dans l'artcvile dont je t'ai donné le lien :
Look for DominantPartitiond or another process that appears suspicious. To narrow down your search, focus on unfamiliar resource-intensive entries on the list. Keep in mind that its name isn’t necessarily related to the way the threat is manifesting itself, so you’ll need to trust your own judgement. If you pinpoint the culprit, select it and click on the Stop icon in the upper left-hand corner of the screen.