Minecraft not starting

[Manoni]

I was playing on a local server with 3 friends last night and everything was working fine, but today when I tried to play I got this:

Error: could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

I looked on google how to "fix it" on panel control > environment variations and blahblah something about creating a _JAVA_OPTIONS
but when I did this and tried to play I got this message:

Error occurred during initialization of VM.
Could not reserve enough space for object heap using -Xmx512M

I tried maybe changing it from 512M to 1028M (Some weird guess I got because I use OptiFine for Minecraft) but it did not worked either, I still got the 512M error message.

I tried basically everything that I could thought. I updated Java, I downgraded Java, I deleted the old updates, I deleted Java completely and reinstalled it but I just fucked everything even more so I gave up and I restored my system to two days ago and tried to extract and open Minecraft again but it did not worked. I saw the "MINECRAFT" letters on my screen for like half second and then they dissapeared and the game did not started. Now, I don't know what's wrong and the game is not opening, I can't play.

Anyone has any idea of why and how can I fix it? Thanks in advance.

[Teddy]

Could not reserve enough space for object heap using -Xmx512M

This is an error in the Java VM meaning you are attempting to allocate more memory than is actively available. Take a look at task manager and find tasks which are consuming your active memory and try closing them.

[Manoni]

Yes, that happened before. I already tried to lower it and I closed almost every active process from the task manager and yet it did not worked, the game stills not opening as I said:

I saw the "MINECRAFT" letters on my screen for like half second and then they dissapeared and the game did not started.

[Archie]

I have experienced the same problem before and solved it by installing the correct version. I figured out I installed 32-bit version (while my computer supports 64-bit) and reinstalling the Java with the proper version worked for me.

[Manoni]

How do I check the version?

[Teddy]

Run Window's Command Prompt and type the command: "Java -version"

[Manoni]

I downloaded a 64bit Java version and it opened, but now it stays like this:


I don't know what's wrong now.

[Manoni]

Forget about what I said above, I "fixed" that by skipping the log in part, this can be locked, thanks to those that helped.

[Archie]

ew ok

Locked.