asus g531gw

[kjchatman1]

i don't work on many non apple board so i'm a bit confused by this asus board. There was very low resistance on three power rails. +1.8VSUS and +1.05VSUS and +3VA_DSW. I removed the pch and the shorts were gone. i'm assuming they were shorts because they measured 0 ohms to ground. I replaced it with a brand new pch and +3VA_DSW is normal again but the other two is back to very low resistance. Is this low resistance normal or no? I don't want to try to power it up unless it's ok

 

[2informaticos]

1V05 PCH's power rail has low value as normal.
Not sure about 1V8, should compare with similar good board.

 

[kjchatman1]

i don't have a good board so just plugged it up and both rails work. the gpu gets warm and the gpu rails show up but the cpu rails are nowhere to be found. there is no power LED showing but the airplane mode LED is on

 

[2informaticos]

As you've changed PCH, need to clean ME region in BIOS.
I recommend to test with full known good BIOS dump.
BIOS corruption can cause missing CPU core voltage.