Exception Error (netbios)

On startup I get the blue screen of death exception error 0E 0028:C0070021 in VXD VNETBIOS(01) + 000009B1 called from 0028:C024C5D5 in VXD VMM(13) + 000005D5.
I cannot Con’t+alt+delt to restart. I must restart by the hitting reset and fooling with a safe mode startup after which the machine runs fine. Any help would be appreciated