I tried the other solutions but they didn't worked, so please don't just say "It's a duplicated so now you have to open this link." Because I tried them.
I have Windows 8.1 and I installed Java 8 JDK some days ago, now I unistalled it because I've had some problems with it (like the PATH for cmd was not set), and after unistalling it I tried to open the Java installer, after the UAC popup nothing happen. I tried opening the installer "sandboxed" with the program "Sandboxie", the Installer opened 2 services, after a few seconds another service opened and then every service closed.
I have no error, no logs, nothing.
P.S.
I tried downloading again the installer 3 times, nothing changed.
Edit:
JRE Installer doesn't start either.
Edit:
I'm actually in safe mode with internet connection and the installer still don't want to run... I don't know what to do now...
I tried with "sfc /scannow" and it said there was no problem, I tried "DISM.exe /Online /Cleanup-image /Restorehealth" too, no problem got reported.
Edit:
I tried running the installer with a Guest account, nothing changed. Anyway I found a solution.