Anyone else having issues with their Macbook after getting the NVIDIA graphics card replaced? When I started my computer it gave me an error that I've never seen before Saying: "Do you want the application AppleVNCServer.bundle to accept incoming networks?" Then randomly I would get the grey screen of death telling me I need to restart my computer by holding down the power button. This keeps happening every 30 minutes. My WIFI wasn't working at all. I finally figured out a way finally connect by going into Airport, renewing the DHCP lease, then going to "Assist Me" and fixing it through "Diagnostics". But I have to do this everytime my computer sleeps or restarts, and I have been restarting it alot because it keeps freezing ! Its so frustrating, I wouldn't have sent in my computer if I knew I was going to have these issues. I ran disk repair and used "Clean My Mac" and I'm still having issues. Anyone else experiencing this?