Pokemon HearGold & SoulSilver black screen issue resolved

It has a problem though - when you start and after Oak tells you to start your own advantage, the screen will become blank, dues to anti-piracy but I found another way.

First, you need to download eNDryptS Advanced. I uploaded it into megaupload so anyone can get it here: www.megaupload.com/?d=0DRBTU2T

Create a new folder, drag these files from the WinZip into the folder, and then put a NDS file into the same folder. Run "eNDryptS Advanced", then the window (like command) will popout and when they says they find a nds file, click 1 for "Decrypt / Encrypt rom(s)"

The result should be like that
"Decrypted --> Encrypted..........: - rom(s) passed
Encrypted --> Decrypted..........: 1 rom(s) passed

Decryption / Encryption failed...: -

1 rom(s) successfully patched."

and second, open no$gba and go to Emulation setting or simply press F11, then find "RESET/STARTUP ENTRYPOINT" there, change it to "GBA BIOS (Nintendo logo)" and click OK. Then SAVE OPTIONS (that is important).

That is it! It should be working fine.