Because I put them on the way they came
I ask only because they are buggers to get back on correctly. They may look ok but be askew or not completely seated. The connectors should seat with a definite <snap> when properly positioned and pressed straight down. They should also stay in place when the wire is given a (very gentle) pull. You obviously have a signal problem and by your original post the only thing you did was remove the card, and I assume the antenna connections as well. Since that's the only thing you touched, that's where you have to look.