[SOLVED] Can no longer undervolt

[mckinleybreen]

About a year ago my laptop was having some serious heat issues. Games running would regularly cause temp to about 100c, causing the AC power to disconnect. Started undervolting and got temps down to about 60-80 while gaming. AC only disconnects after long sessions. I was gone from November to early Feb and I come back to the laptop and all my undervolting has been undone, with all of the options on throttlestop, and XTU (I downloaded just to be sure) and a bunch of articles saying it is no longer possible. Games run at about 100 C again and it idles at between 50-65. I tried to roll back my bios but no such luck (I have never done it before so I might have just done it incorrectly.
These are my specs.
Asus STRIX GL504 GS
Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz 2.21 GHz
16 Gig ram
NVIDA Geforce 1070.
Is there anything else that yall would recommend or am I just screwed.
The computer is about 3 years old if that makes any difference.

 

[mckinleybreen]

About a year ago my laptop was having some serious heat issues. Games running would regularly cause temp to about 100c, causing the AC power to disconnect. Started undervolting and got temps down to about 60-80 while gaming. AC only disconnects after long sessions. I was gone from November to early Feb and I come back to the laptop and all my undervolting has been undone, with all of the options on throttlestop, and XTU (I downloaded just to be sure) and a bunch of articles saying it is no longer possible. Games run at about 100 C again and it idles at between 50-65. I tried to roll back my bios but no such luck (I have never done it before so I might have just done it incorrectly.
These are my specs.
Asus STRIX GL504 GS
Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz 2.21 GHz
16 Gig ram
NVIDA Geforce 1070.
Is there anything else that yall would recommend or am I just screwed.
The laptop is about 3 years old if that makes any difference.

 

[heyho4711]

on my different notebook I had similar event. xtu didn't undervolt anymore. I had to uninstall xtu including profile, reset my bios settings completely (by long press the corresponding keys), reenable overclocking in bios (which allows the undervolt settings) and then reinstall xtu.

 

[mdd1963]

many laptops have poorly applied thermal compound...(one of my laptops started overheating many years ago, shutting down even watching YOutube. Upon disassembly/removal of heat pipe, discovered thermal compound covering only barely 1/4th of actual CPU die...)

I'd consider looking up how hard it is to access the thermal pipe/heatsink/cooling fan assembly, and consider removing it, cleaning it, and properly applying some quality thermal interface compound....