I'm trying to use asio4all driver but I get no sound out of fl studio. I have windows 7 and a new hp computer. I'm trying to use it regarding better latency with my midi controller

I don't think this is an Image Line issue, but I too have problems using ASIO4ALL on Win 7. I use it with Sonar X2 in order to use my laptop speakers when I don't feel like breaking out my audio interface.

My problem is that ASIO4ALL is really hit and miss. It works at best 30% of time. I have pretty decided not to use it any more. From my experience, it needs to be reinstalled on a regular basis or else it just stops working.

It would be a wonderful tool if it was stable, but it is anything but.

To get asio4all to work, you need ONLY the correct inputs and outputs turned on in asio4all's control panel. So no Spdif outputs, if you have a soundcard at the back of your computer and extra ins/outs at the front, go into Windows control panel and turn off "listen to this device" on the extra mic input.

A screenshot of your asio4all control panel would show the answer, also try the computer forum here as this isn't image line related.