Did a hard reset but it didnt fix they system ui and i tryed again it goes to do you waant to reset i say yes and it does not show little green robot guy sayin errasing data how do i fix it

system ui crashed and wont turn on - Sony - Comunidad

Sony https://community.sony.es > m-series > td-p
... Xperia Companion. This will do a clean installation of the latest ... August 2017.

August 2017. Keep getting " unfortunately UI has stopped working" message.

..

if your have faced this issue while using your computer. Then you need to follow these steps to fix UI Failed to Load on windows

https://www.mygeekshelp.com/avast-ui-failed-to-load-after-windows-10-update

Do a hard reset!

Turn the unit off. Press and hold both the power button and the volume button at the same time, until the little yellow-green android robot comes on the screen. You can then release the buttons. You will eventually get a menu (this took a while to come up). Use the Volume button to scroll down to "Reset to Factory Standards", and select by pressing the power button. You`ll get a message asking you if you`re sure you want to do this. Use Power button again to select "yes". It will set the unit back to what it was like when brand new.

It is highly possible that the system has been corrupted. Your best bet is to hard-reset the android. Usually, it is achieved by turning off the device, then press Volume Down + Power until the recovery console appears. You can then use the Volume Controls to select your choice (usually Factory Reset) then press Power to execute your choice.

Try rebooting. Hold the power button till the menu pops up and click restart.

If that doesn't work try Hard reset Turn the unit off. Press and hold both the power button and the volume button at the same time, until the little yellow-green android robot comes on the screen. You can then release the buttons. You will eventually get a menu (this took a while to come up). Use the Volume button to scroll down to "Reset to Factory Standards", and select by pressing the power button. You`ll get a message asking you if you`re sure you want to do this. Use Power button again to select "yes". It will set the unit back to what it was when brand new.
By doing this you be ready to lose your saved data and setting
.

arnova 7 g2 has no volume button..

Hello,

its showing operating system not found, because the system cannot detect your hard disk.

Open your system, remove and fix back the hard disk, then try again.

Take care.

I read another entry and you have to hold down the red and green button and click your stylus into the bottom little button beside where you plug your phone in to charge.
It didn't fix my problem though which is similar to yours.