I started checking first I checked all IC power good signals
then checked all vs lines.
I flashed new bios but same issue.
I checked Bios with DSO also that also fine.
Then I checked IO requirements. That was also ok
When I checked RAM ic everythig was ok accept RAM VTT supply. (I did not remember that I checked it properly or my multimeter probe not touched properly) but I changed RAM IC and VTT supply Came out. but same condition no any amp variation.
Then I checked DRAMRST# it was missing in mbd. I searched for pullup and it was found near CPU Backside. I replaced it from scrap mbd. but same condition no amp variation.
at last I checked RAM DATA and Clock using DSO. Data was there but clock was missing. I took help from Satish Sir he told me to buypass the dual JFET (QC2) which was conneted to PCH_SMBCLK and DATA line. I removed the JFET and simply made jumper between from pin1 to pin6 and pin3 to pin4.
I learned many things from this mbd I checked everything after successful repair and everything working good.
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