only bottom slot ram working

Ashes90

Commendable
Apr 29, 2016
1
0
1,510
hi i have a toshiba c855d ,i have 6 gb of ram installed but only 3.5 available .
i have one 4gb ram (bottom slot) and 2gb ram (top slot)
when i swtich the ram around i have 1.5 gb avaible of 6gb
My laptop is only alowing me to use the ram that is installed in the bottom slot but, recognizes that i have 6gb installed.
someone please help me .
below is what my computer show:

Module Details: Slot "CHANNEL A", 2 GB, Speed "1600 MHz SODIMM", Type "DDR3", Manufacturer "Samsung"
Slot "CHANNEL A", 4 GB, Speed "1600 MHz SODIMM", Type "DDR3", Manufacturer "Kingston"
Memory Available to OS: 3.59 GB
System Family / Range: Dakar 10ABX/10ABXG
System Architecture: x64-based PC
Physical Processors: 1
Processor Cores: 2
Motherboard Version: MP
Bios Vendor: Insyde Corp.
Bios Version: InsydeH2O Version CCB.03.72.306.20
Bios Release Date: 01/09/2013
 
Solution
It can be that the other slot is bad. Try one RAM in the other slot (not bottom) and see if laptop recognizes. If individually, either of the ram does not work on the other slot, keeping the bottom slot empty, then it is a bad slot issue.
It can be that the other slot is bad. Try one RAM in the other slot (not bottom) and see if laptop recognizes. If individually, either of the ram does not work on the other slot, keeping the bottom slot empty, then it is a bad slot issue.
 
Solution