@Oldemar: If you don't boot into Android System, you won't be able to use Android MTP. I'm not sure if you'll be able to restart with ADB but you can try. Boot into the Samsung screen with the phone hooked up to your computer and attempt to use ADB to reboot the device into recovery.
Doing this requires you install the Android SDK from developer.android.com and having the USB driver you said you installed. Install the SDK, launch a command prompt at the platform-tools folder and type "adb devices" without the quotes into the prompt. If it shows your phone in there, you can input the command "adb reboot recovery" and see if it will get you in.
mmm strange the the tool adb doesnt run in command prompt in windows 8.
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@Oldemar: If you don't boot into Android System, you won't be able to use Android MTP. I'm not sure if you'll be able to restart with ADB but you can try. Boot into the Samsung screen with the phone hooked up to your computer and attempt to use ADB to reboot the device into recovery.
Doing this requires you install the Android SDK from developer.android.com and having the USB driver you said you installed. Install the SDK, launch a command prompt at the platform-tools folder and type "adb devices" without the quotes into the prompt. If it shows your phone in there, you can input the command "adb reboot recovery" and see if it will get you in.