Question Hi guys !

Dec 30, 2020
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i have a gigabyte core i7 desktop and when i am turning it on fans are starting and power is coming to the board but OS is not loading after 4 or 5 time pressing the power button OS is loading , so what could be the problem and i have insatalled 6 GB ram in my desktop but when i am checking it in CPU-Z software it shows 6 GB but in run (dxdiag) it shows 2815MB ??????????