Your situation may be different than mine, but i have gotten the 00 code on my hero vi (z87) mobo with both a 4770k and 4790k cpu and for me it was a voltage stability issue every time. The problem always went away after upping the voltage in some manner. Usually the additional turbo mode cpu core voltage.
Id think that my computer was running stable, but then id restart it, or start it up the next day and get 00 upon startup.
I upped the voltage to 1.3, problem went way. So i continued to do "real-world stress testing" , graphic intensive gaming, multimedia multitasking, etc, and would continue to lower the voltage by .5v upon every restart until i found the lowest stable voltage at my current overclock.
Every time the voltage was too low, id get that dreaded 00.
Your issue may be different than mine, but i figured id share what helped me get rid of the problem. I still have Asus Suite installed, but i only use it for fan tuning now. I used to do some tweaking through the software, but now i do my tuning in the bios. Ive had it installed since i built this rig a year ago and only had a problem once that required me to reinstall it.. For some reason it stopped reading information from the sensor probes and stopped showing fan rpms, so i reinstalled and everything has been fine since. But i have heard others say they prefer not to use it.
I know the Asus suite on the Vi differs slightly from the vii.
ASUS ROG Z790 Apex Encore | i9 14900ks | | G. Skill Trident Z5 8000 | 2x WD SN850x 4gb | Asus Strix RTX 4080 OC| Asus ROG Thor 1200w | Windows 11 Pro