Asus P5VDC-TVMTE Manual page 23

4. Remove the heatsink and fan
assembly from the motherboard.
5. Rotate each fastener clockwise
to reset the orientation.
The narrow end of the
groove should point outward
after resetting. (The photo
shows the groove shaded for
emphasis.)
ASUS P5VDC-TVM TE
Narrow end of the groove
1-13