ah, i am sorry for causing you guys troubles. it just a display cable problem. changed my cable, fixed it. it just so coincided for my cable to be broken at that exact timing with me pressing the select button, oh god.
yeah, as i mentioned in my post, i dont have access to try other cable at...
its on setting.
oh, and i recently tried to listen seperately through the audio out using rca to 3.5mm. i dont know if this actually matter, but everything is fine, i can hear booting sound, and when i put my game on dvd, i also can hear it plays.
so, i have this slim model 75004 series. it got modchip i am pretty sure. i've done a couple things on it, while iam still new to this modding scene. just opentuna and play some games through smb. i just want to try things, and everything works pretty well until this happened. when it happened...