I have to disagree with you on most of this. I don't know if English is your first language or not, but most of this post isn't very understandable to me, maybe you are just mad or really tired of the problems. If you want help trying to solve the issues, then I suggest taking a deep breath and working on posting as concise and detailed post of the issues as you can and include a DxDiag file so we can look at the hardware you are running.
Now, it says you solved one problem by uninstalling a DLC....but you don't say which dlc. Your issue was game not starting, IIRC and you said you tried many fixes, but didn't list which fixes what you did exactly nor did you describe in detail what the game was doing...ie, black screen then closing, or clicking on the game and busy icon then nothing...
After you solved one issue, you say another issue cropped up, being that you can't save...well, I know of two things non-game related that can cause this. First is Cloud backup by microsolf, because the cloud save system moves the files needed by DAI into the cloud and when DAI needs the files it doesn't find them. Second is Anti-virus not exempting DAI saves folder and since it views DAI as a virus on some systems, then it deletes or prevents the saves from happening. I have also heard moving the stock save location can also cause this.
Now, the recommended specs are below...at no point do I see any reference to Windows 10...which happened to come out 8 -10 months AFTER DAI.
OS: Windows 7 or 8.1, 64-bit
Processor (AMD): Six core @ 3.2 GHz
Processor (Intel): Quad core @ 3.0 GHz
Memory: 8 GB
Graphics Card (AMD): Radeon HD 7870 or R9 270
Graphics Card (NVIDIA): GeForce GTX 660
Graphics Memory: 2 GB
Hard Drive: 26 GB
DirectX: 11
Internet: 1 Mbps up and down
So you expect a company to design a game to run perfectly on an Operating system that hasn't even been released yet?? Um..no.
As far as selling a game no one can play, again, I have to disagree, you may be having issue, but my copy works perfectly fine, thus it sounds like the issue is with your PC and not inherent in the game. If you wish to try and work with us here to get your copy working, I will be happy to see what I can do, or you can move over to https://help.ea.com for official help, and chat with an advisor
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I am NOT an EA employee, I am just a simple gamer like most everyone else here volunteering my help to those who may can use it .....That means I have to pay for my games just like you, lol.
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Clean boot helped me too. I have launched msconfig/System configuratiob/Services; checked the box "Hide all Microseft services, and at first Disable all, restarted the computer and the game started, even in a very small area of the monitor cos the Nvidia services where also disabled. Then, now sure that it was about a service, at first I have disabled only the upper half, then game was running, then the lower half, disabled all except the game apps services, and finally I have found the sole culprit in < RAZER GAME SCANNER>, the only one that should be disabled in order that game to run. Seems that it comes with Razer Synapse (for any of their products), and it informs them what games you are playing. At course if you are disabling it you cannot chat any longer on Razer Chat, but hey there are plenty of other chat services.
