When attempting to run Cinebench r23 on a new build with brand new parts. Cinebench ends up crashing the PC, temps reach 100 Celsius. Note overclocking hasn’t been played with other than enabling xmp.
Build summary: Psu - corsair ax1600i Mb - ASUS apex z790 encore GPU - 4090 suprim x Fans-T30s 4 intake front , 4 intake side, 1 rear Aio - arcitic liquid freeze ii 420 mm Ram - corsair vengeance ddr5 ram 7800 Case- corsair 7000D
Obvious question but did you take the plastic film off the AIO cooler?
Are the fans increasing speed as the temps rise?
Which component is hitting 100?