Zalman fan controller issue

[elyrly]

hi here is the story: i was typing a english paper when my screen went $#$$R$ so i took out the power connector right away and checked if any parts were fryed nothing so far but i realized it was the zalman fan controller connected to my cpu fan. i took that off and it works now. is this problem common with zalman fan controllers?

i know they take couple watts to run but does it disrupt the whole system?

thanks