Actually i think you'd get a bluescreen before things starts to BURN, but i'm not sure
You can think what you want but i actually know this stuff.
Bluescreen is software related. You will not encounter those when your problem is hardware related.
1. I did connect all the wires correctly.
2. I tried looking into the Device Manager but those ports are not even showing there.
Guess, i have to use onboard panel now.
1. Ok
2. That is because you had those drivers installed before. You need to uninstall those drivers and then reinstall them.
3. It might help to reinstall windows but i dont think you would want that.
4. You probably damaged something already when doing this. If you really want to use the front panel again i suggest you bring it to a PC shop.