Ryzen 1700x with new mainboard bios showing -20C° temps?

[unexpectedat144]

I have a 1700x and asus x370 strix mainboard and some Corsair CMU16GX4M2C3000C15 3000mhz ddr4 ram
(running at 2133mhz) auto speed which mainboard itself selcted and some oc of the cpu which I did with the oc tool build into the mainboard asus bios ,the strange thing /problem is the pc boots everything is running fine games running good and everything else too but the cpu is not showing the right temp. either in the bios or the ryzen tool or hwinfo /monitor where it shows 0C° for the cpu and 40°~ for the mainboard the ryzen tool is showing temps. from -20C° to -10°


as cooler I have a liquid all in one cooler with a 240mm rad. (it is for 300w tpd rated ). I tried bios with default settings and no OC for cpu and no right temps(the bios is the version 808), too like when it's OC.

Would be awesome if someone knows what is causing the problem , everything is working except the pc showing me the right temps for for cpu ;(
http://imgur.com/a/4kmbp

😛

[unexpectedat144]

Bios 809 update and clear cmos didn't help still showing woring temps with hw monitor and hw info64 ;(

[unexpectedat144]

https://imgur.com/a/jTD7v

It's showing the right temperature ayy :DD

I installed asus ai suite did the OC with the tool and it showed the right temperature then I looked what it set different it is the !CPU 1.80 V VOLTAGE ! setting if it's changed to 1.900V the cpu is showing the right temperature

http://imgur.com/a/CHmFk

[unexpectedat144]

solved