Try troubleshooting it,or check if you have your Ethernet drivers installed. By no Network do you mean a Red-Cross or an Exclamation Mark at the local area connection icon?
Why the heck do you wanna run Opera Mini,when you can run Opera,No offense but why?It just sounds insane . I dont think you can run it directly;Wait till someone comes up with a way if there is
I think its your 2nd Core is givin' you this problem.If its your 2nd core,try running the machine with 1 core..If you are still getting the error,you might buy a new Motherboard and Processors :D