These are the errors I get when I try to run a simple java version in the command window.
I followed the advice on Error: Registry key 'Software\JavaSoft\Java Runtime Environment'\CurrentVersion'?.
When I went on regedit, here's what I saw
Which meant that there was nothing to change - right runtime version. I then did the next step which was to "delete all previous versions of Java (using "Programs and Features" uninstall process) and then re-install just the version you want to work with"
However, that didn't work either......
Here is my current java directory(see that i have everything installed)
And my current environmental variables are
JAVA_HOME - C:\Program Files\Java\jdk1.7.0_71
Path - C:\Program Files\Java\jdk1.7.0_71\bin
I want to thank @almas-shaikh for this answer. His comment made me check over C:\Program Files\Java\jdk1.7.0_71\jre\bin and see that there was no java.dll library file inside that directory. What I did next was just deleting the jdk and reinstalling it via jdk-7u71-windows-x64.exe executable. Now when I execute java -home, I get
Now the part I don't get is how the java.dll library file was deleted in the first place......