Why you should avoid AMD and get a Steam Machine with Nvidia's GeForce graphics. Nvidia's graphics cards may be a black box, but they're easily the best-performing option on Linux machines.
The Visa Zero Liability policy protects VISA cardholders who have a Canadian issued. VISA card and experience fraud through unauthorized used of their card. The Visa Zero. Liability policy does not apply to ATM transactions or commercial cards (VISA Business.
You have an issue in that the bridging visa A granted when you apply for a 189 has unlimited work rights but you can't access the BVA until his 457 visa expires. If his 457 visa is cancelled then the BVA will be cancelled too and you will have to apply for another BV.