I have a Gigabyte mb. GA-B75M-HD3. It has 2 memory slots. I have 3 ram modules. 2x4gb (both same specs)and 1x2gb. The problem is pc doesn't boot when a 4gb ram is installed in slot 2. Like this:
Slot 1: 4gb Module A - Slot 2: Empty - Works.
Slot 1: 4gb Module B - Slot 2: Empty - Works.
Slot 1: 2gb Module C - Slot 2: Empty - Works.
Slot 1: 4gg Module A - Slot 2: 2gb Module C- Works.
Slot 1: 4gb Module B - Slot 2: 2gb Module C- Works.
Slot 1: Empty - Slot 2: 2gb Module C- Works.
Slot 1: Empty - Slot 2: 4gb Module A- Doesn't Work.
Slot 1: Empty - Slot 2: 4gb Module B- Doesn't Work.
Slot 1: 4gb Module A - Slot 2: 4gb Module B- Doesn't Work.
Slot 1: 4gb Module B - Slot 2: 4gb Module A- Doesn't Work.
Slot 1: 2gb Module C - Slot 2: 4gb Module A- Doesn't Work.
Slot 1: 2gb Module C - Slot 2: 4gb Module B- Doesn't Work.
Why is this happening and any way to make the 2nd slot work with 4gb modules?
Slot 1: 4gb Module A - Slot 2: Empty - Works.
Slot 1: 4gb Module B - Slot 2: Empty - Works.
Slot 1: 2gb Module C - Slot 2: Empty - Works.
Slot 1: 4gg Module A - Slot 2: 2gb Module C- Works.
Slot 1: 4gb Module B - Slot 2: 2gb Module C- Works.
Slot 1: Empty - Slot 2: 2gb Module C- Works.
Slot 1: Empty - Slot 2: 4gb Module A- Doesn't Work.
Slot 1: Empty - Slot 2: 4gb Module B- Doesn't Work.
Slot 1: 4gb Module A - Slot 2: 4gb Module B- Doesn't Work.
Slot 1: 4gb Module B - Slot 2: 4gb Module A- Doesn't Work.
Slot 1: 2gb Module C - Slot 2: 4gb Module A- Doesn't Work.
Slot 1: 2gb Module C - Slot 2: 4gb Module B- Doesn't Work.
Why is this happening and any way to make the 2nd slot work with 4gb modules?