Sorry, [almost everything] has stopped unexpectedly when starting one of my rooted Z740 AT&amp;T phones, it, after about 30 seconds, starts by stopping Google play services, then after about 5 consecutive of those most apps start crashing and the only way to open any app is using iSwipe from Clean Master.

I cannot to a reset as in the way through the settings won't do anything, and my volume keys are broken.

any Idea to suppress the notifications, or better, reset the device is greatly appreciated.

Usb debugging has been enabled before hand and works fine
You can try sending an Intent with the adb shell. Connect the device, open a terminal and type the following : 

adb shell am broadcast -a android.intent.action.MASTER_CLEAR


You need adb installed.