nvlddmkm.sys windows 7 64

hello ! I have 2 nvidia quadro 4000 . when i use gpu nr. 1 everything is ok(only one gpu) but when i use gpu nr.2 (only one gpu) i cant login because i see blue screen and problem is nvlddmkm.sys …i have installed windows 10 & 7 and the problem continues with blue screen, too i installed all nvidia quadro 377.61 , 377.83 , 377.84 and for gpu nr.1 everything works fine …but if i remove gpu nr.1 and i put gpu nr.2 appears again bluescreen with nvlddmkm.sys