You should be able to see at least some logs if you will start editor from the command line. To do it on windows, open command prompt (cmd.exe), then change directory to where Defold is located, for example:
cd Downloads\Defold
then run this command:
.\packages\jdk11.0.1\bin\java.exe -Djna.nosys=true -Ddefold.launcherpath=,-Ddefold.resourcespath= -Ddefold.version=xxx -Ddefold.editor.sha1=d0c8b4bdd890a5ae34dc3eb2f5fde65741d2b192 -Ddefold.engine.sha1=34bb9603dfcb145c74fbb4f36f4146acea4c4252 -Ddefold.buildtime=2019-03-19T14:03:01.657137 -Ddefold.channel=editor-alpha -Djava.net.preferIPv4Stack=true -Dsun.net.client.defaultConnectTimeout=30000 -Dsun.net.client.defaultReadTimeout=30000 -Djogl.texture.notexrect=true -Dglass.accessible.force=false --illegal-access=warn --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.desktop/sun.awt=ALL-UNNAMED --add-opens=java.desktop/sun.java2d.opengl=ALL-UNNAMED --add-opens=java.xml/com.sun.org.apache.xerces.internal.jaxp=ALL-UNNAMED -jar .\packages\defold-d0c8b4bdd890a5ae34dc3eb2f5fde65741d2b192.jar com.defold.editor.Main
Hopefully that way we will be able to see whats wrong and help you.