Not sure about the next steps...
Not sure about the next steps...
In short, use the undervolting settings on your Lenovo Yoga 730-13IKB(i7-8550u) now. Since you can't locate the older BIOS (v1.11), BIOS flashback isn't an option. You might want to consider a new desktop or explore liquid metal cooling for the cooler. Regarding undervolting, some manufacturers have restricted it in recent updates—if you have access to an older BIOS version, sharing it could help.