How to fake PC header connections?

[big10p]

Hi

I'm currently putting together another MAME rig from a de-cased PC, but the BIOS is detecting that the front panel USB 2.0 ports and audio jacks aren't connected to the headers on the motherboard. This is annoying, as I then have to press F1 to continue booting into windows.

So, the question is, how can I fool the BIOS into thinking the header cables are connected? Presumably I just need to short certain pins? Below are the pinouts of the headers I'm talking about.

Thanks.

[Malenko]

anything stopping you from ripping the front panel out of the case, and just plugging it in without using it?

[DudeRegular]

Also poke around in the bios for a setting along the lines of halt on error.

Sent from my LGLS990 using Tapatalk

[big10p]

I want to keep the case intact, as I plan on using it in the near future.

I looked at the Halt settings in BIOS, but they can't be turned off. The only 2 settings are 'All' and 'All, but keyboard'.

I think I'll get the multimeter out and see if I can figure out which pins get connected by the header cables.

Cheers.

[ed12]

pin 7 to gnd
or to high,whichever it likes

that is your sense line

ed

[big10p]

Thanks, ed12. I connected pin 7 to pin 4 (3.5v) and that's sorted the audio detection. Not even sure how this works TBH, as there's no continuity (or resistance) between those pins, on the cable. I could only read continuity between pins 1 and 3. Hmmm.

Anyway, I also sorted the USB detection by connecting S-GND to GND, which is what the cable was doing.

Cheers all.