ok again check your router if your router old model will block salem and that why give you black screen this not because cards or graphic....
now you try VPN try private tunnel program try free trailer give you 500mgb install this then delete your salem client then install salem again mean just try this program with salem if you are ok mean no black screen
that mean this troubles because of your router mostly that because these router is old model
so you need to buy new router ....
for me I recommend you to buy TP-LINK router new model name it TL-WR941ND black color and give you huge cover area