thomas76943

Thanks for the reply. The manual has no mention of any speaker being included, despite the SPDIF_O connector on the motherboard. I have just checked countless boxes and bags from various motherboards and can't find one. If one was originally included, I don't have access to it. Do you know what kind of error codes I might expect and if so, how to resolve them?

After doing not much research, it will become obvious to you that a large number of early X99 Gigabyte motherboards had some faulty bios versions, resulting in boot loops. My setup's boot loop used to happen every 25 seconds or so but now it is every 3-4 seconds if left alone. (CPU pins and motherboard socket seem perfectly fine to me) Setup I am trying to get working: i7-5820k Gigabyte X99-SLI Corsair Vengeance LPX 4x4GB 24000mHz [I have also been testing with a 2x8GB 3000mHz version] GTX 780 (definitely works) Kingston SSDNow V300 120GB SSD (definitely works) Corsair RM1000 PSU (definitely works) [I have also been testing with a ~2012 OCZ 700W unit] I have tried the following, none of which post (no display output, at least): - Booting with/without RAM - Booting with different amounts of RAM (1-4 DIMMs) - Booting with different RAM kits (different frequencies and capacities) (note: I am prioritising the manual's recommend slot if only 1 is to be used) - Booting with/without secondary storage attached (have only tried SATA) - Booting with/without a graphics card - Booting with different power supplies - Booting with/without anything in the USB ports - Booting after clearing the CMOS (holding screwdriver between pins) - Booting after removing the CMOS battery for 10 minutes - Booting after trying a CMOS battery from a different, working motherboard I have recently been attempting BIOS updates: When updating to BIOS version F24c (latest, released 2018/06/15), here is my method: 1. Remove all RAM DIMMs 2. Downloaded latest BIOS on another machine 3. Put just the BIOS file on a FAT32 flash drive (I have also tried placing all three files) 4. Renaming the BIOS file to GIGABYTE.BIN (I have also tried not renaming it) 5. Putting the flash drive into the machine and turning the power on 6. The machine then does one of its 3-4 second boot loop restarts and then realises a flash drive is in, resulting in an orange light turning on. - This is the only way the machine remains powered on 7. The orange light then flashes, as does the light on the flash drive. 8. I leave this until the lights become solid and do not flash. 9. I then turn off the machine, install 1 RAM DIMM and power on. 10. This does not result in any display output. To recreate the conditions of the tutorial I followed for this, I have also tried the above method with the F20 BIOS (released 2016/01/12). Any help would be greatly appreciated. Thanks, Tom