Name: LG Optimus L5
Additional information: I managed to do a factory reset, so it's clean of any other applications, smartphone is rooted.
Basically what happens is that when I fire up my smartphone and enter my PIN code, then first thing that pops up is message about that my home screen has stopped working. Before I was able to access settings, I cleared the cache and stuff, but it didn't work, then I tried to limit RAM settings (such as if two applications run, then the one I am not using will be closed) and after that even settings app stopped working.
I think I managed to mess up something in an application that is for rooted devices (ROM something) that gave me permission to change processing speed and stuff. Before it was turned to max, worked like charm, but due to huge battery usage I lowered it to around 600 as it was before, but after a reboot the problem started to occur.
If you know more than I do about Android phones, then feel free to make suggestions, I will try everything that doesn't look shady as I have nothing to lose anymore about this phone.