Trust me, i've tried DSEO, but with no result.. i could upload archive here, but what i basically did - i analyzed the broken driver from Intel archive for Win7 and tried to rebuild .inf file, then generated .cat file from the .inf, and then tried to sign all .cat\.sys\.dll, but some files successfully signed, and some just ignored signing for unknown reason..DSEO shouldn’t be that problematic. You can locate the driver file in the device manager, and then you enable the test mode then sign it, based on the assumption that the problem is caused by the driver signature.
Are you sure that DSEO signature is enough for kernel-mode drivers? Shouldn't it be cross-signed (timestampted) by public trusted CA even for testing mode?