[Q] My failed rooting attempt, need your help - Android Q&A, Help & Troubleshooting

First thing, I am very very sorry if I posted this in the wrong topic, but I am in an extreme rush.
My phone is Sony Xperia Tipo (Si21), android 4.0.4 ICS.
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I don't have a wireless router so I wanted to connect my phone to my PC through USB cable and share my internet to download some things. I found this tutorial which I decided to follow. In it, it said I needed to root my phone. I decided to do it and followed multiple tutorials but later on I found out they weren't working for ICS. I did download Java JDK and Android SDK along with files I needed and the google USB driver.
I found this tutorial from here though and thought it would work since this is quite an awesome community. I downloaded the files and ran the .bat file. Everything was going well and then and my phone restarted (as it should), but once it started again it was very slow (which could be caused by some backup that bat file created and my low phone memory with no SD card in it). That's all fine, but after like 1minute my screen goes black. I push the power button (used to lock/unlock phone) and only those 3 buttons glow on the push and turn off when I push again. All I can do is to pull out the battery and start the phone again. I restarted it a few times and once it acted normal, but when I accessed my galery it was messed up and when I tried xperia galery it was even worse (didn't show 3d well and there was lots of flickering and similar...). After that I restarted it to see if that would fix the messed up gallery and once phone booted screen went black again.
I tried the unroot option in the bat file and it gave me this:
This is my first android phone and I got it like couple of weeks ago so please have mercy on me ...

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Sorry, I fixed it after couple of hours of work...had to restart my whole phone in the end.