I guess something could short something and feed back down the cable to the card ??? only you being there first hand can determine that and weigh the risk you want to take ??
I'd think if I thought that it was something that may end being added costly or may cause extra damage I would try to resolve it like maybe get a new monitor
one new monitor is cheaper the a new monitor and a new card and if at worse anything right on down the line [ your whole system is all plugged in together as one unit ]
it all your call in the end on whats best