If ASIO4All complains that your device is not available, most likely you have some other program open that uses it (media player, spotify, even your browser if there is a tab with youtube or something). Check your system tray too. Basically, Sonar needs exclusive control of the device.

This same issue should not affect you if you get a new soundcard by the way because you will be dealing with an entirely new set of devices/drivers, and no ASIO4all at all.

I agree with previous post, it will always be better with a proper soundcard.
BUT I manage to work with my laptop internal one (which shouldn't be very different from your's) and ASIO4ALL without problems(at least not enough problems to make it unusable). 
So here are few possibilities:
* To disable unused soundcards, 3 ways (first is better)
-> get to Windows Device Managers (control panel) and disable unused soundcards (hammer)
-> try using ASIO4ALL control panel (try rebooting eventually)
-> In sonar prefs - Peripherals : just check the one you'll be using   (scalpel)
    In sonar pref : disable drivers sharing  and disable the "Open all peripherals/Devices" (I'm french so I don't know the proper english words for the sections. It's the one with ASIO/WDM selection).
By disabling sharing you'll disable the chances to get configuration changes from the system when system sound occurs.
I have disabled "Open all peripherals" and it works.(consistant with the idea to restrict used soundcards)
With only one available soundcard, the timing master should be automatically set to the one you have.
 
Then check your outputs and master are properly directed to the soundcard.
Also check your speakers are connected  to the proper output and your device driver is not disabling the output.I have seen "Rear" output be disabled because of headphones detection.
 
By the way, using the internal soundcard, you may get too much latency to use your MIDI keyboard to play without delay. A proper soundcard will enable you to get low latency and diminish it drastically. Concerning the focusrite, the saffire 6 is a good one but it's an old card (USB1).It's limited to 48k max. The new Scarlett serie is USB2 so you should get better long term support, better sample rate and maybe less latency (for MIDI soft synths, it should be better). Neverteless both are very good and cheap soundcard (preamps are very good on both and don't sound cheap)
 

Thanks Guigz2000, I will try that til my new card arrives.
 

musicroom
The good people on the sonar forum are helping as usual. I would suggest changing the title to this thread. 

 
Thanks Musicroom,
 
Yes everyone has been really helpful, and I am very grateful.
 
But if I change the title, those who already responded might think it is a new thread. If I call it something like "Can't Hear Any Sound in Sonar" - formerly known as "I think Sonar killed my sound!" - that might be a bit long! But when the issue is resolved I'll add it to the title.
 
thanks
 
 

I got a new sound card, the Roland Duo-Capture EX and I also got some monitor speakers (Behringer MS-16 -with separate Bass and Treble controls - how did I ever function without these before?!!)
 
I still couldn't make anything work, once I'd followed the intructions to the letter, but luckily I found a brilliant UK support service by accident.
 
I thought Roland UK only dealt with Support for devices, not software, so I rang them because of the interface, and the guy Jamie helped me with the device and with Sonar too. He got remote access, and it turned out I had to assign a  Synth somethingto the track, (Synth + Insert synth > Cakewalk SS1), and then it worked.
 
I had been phoning the US for help, and taking ages to get through, but it was a fluke that I found out about Roland UK. I would not have found out about them if I'd bought a different sound card!
 
I have to use two sets of speakers (the mini jack port for other non-Sonar sound), but I don't care. At least this way, I don't have to use a separate PC for music.
 
Thanks for your advice so far.
 
Can't wait to finally get started!

Lol...of course if you have no synth,you won't get any sound...
I thought you had no sound with a simple audio track.wav or mp3 import..when having no sound,it's the first test to check soundcard is working. We made the problem more complex than it was..

cool it's working for you.behringer monitors are cheap but it's a good entry point..definitely better than a pc standard speakers.

Post error on my phone....sorry.

Thanks, lol!
 
Well I had no idea about the synth thing! It's still pretty much like a foreign language to me. But yes, there was no sound in imports either - that was due to something else though. Also, I could not click my keyboard device. I did not know you had to uncheck the other two in the list before it stopped the keyboard being grayed out.
 
And ASIO4ALL was messing it up too, so I had to delete that. I forgot that's only if you don't have a sound card.
 
So there were a few things, but Jamie went through them one by one. I am learning slowly but surely.

CoffeeTime - Glad you got it figured out!  Gratz on the new gear.
 
Usually the Sonar forums are very helpful, but just understand you will always get comments from people who didn't read your question, or understand what your problem is, or how to help you.  As you figured out, a dedicated sound card is going to work much better than an internal card, but you CAN listen to and playback audio from your internal card with the correct settings (and synth outputs for midi hehheh).  You will be more limited for sure, but it can and does happen.
 
Some of the "get a soundcard or it wont work" comments are probably meant with the best intentions, but they are neither true, nor helpful.  Always take forum advice with a grain of salt.
 
 

Thanks Mike
 

Just say Hi Coffee Time and everyone! I went through 2 pages that very interesting, since I have same sound card from Realtek (1 of my Laptop PCs)  and try to understand the issue to solve when needed!Or not sure if there is anythings that I can help!
Look likes all of you are using Pro-audio interface?
P/S: Not sure if it is my first post!