For anyone else who struggled with not detecting their phone. Here's what happend to me: First I was trying to uninstall the automatic portable device that windows adds when I plug in my galaxy s3. That was silly seems if you manually install the driver it will pick up. I had to go to right click my computer -> Manage -> Device Manager - > Action -> Add Legacy Hardware -> Choose Android Phone -> Browse to ..\AppData\Local\Android\android-sdk\extras\google\usb_driver and select android_winusb.inf -> Then I selected the "Android Composite ADB Interface" option

For anyone else who struggled with not detecting their phone. Here's what happend to me: First I was trying to uninstall the automatic portable device that windows adds when I plug in my galaxy s3. That was silly seems if you manually install the driver it will pick up. I had to go to right click my computer -> Manage -> Device Manager - > Action -> Add Legacy Hardware -> Choose Android Phone -> Browse to ..\AppData\Local\Android\android-sdk\extras\google\usb_driver and select android_winusb.inf -> Then I selected the "Android Composite ADB Interface" option

UPDATE

Ok, the above solution wasn't working any more after a reboot of my pc. So this time I saw my phone was under "Other Devices" in Device Manager. Clicked Update driver, choose from my pc, "Have disk..." and forced it to use the above mentioned composite driver despite the warning and then it worked again.