dell 755 16 gb possibliy bios locked

[chamjisky]

hi
i have old dell desktop optiplex 755 .. officially it supports only 8 gb total ram (4 x2GB)
but as per below post most people have success with 16gb ram.

http://en.community.dell.com/support-for...?pi21953=3

my id over there is warkadang.
as you can see i am using KVR800D2N6/4G featurewise it seems same as ohters are using..

the issue is that when i have only this ram stick in pc it doesnt posts (no display no beep) but when i use any other 2gb ram then it does posts and boots into windows but it doest adds the ram from the 4 gb sticks.

Also bios does shows that the ram in this stick is 4gb but in bios in the total ram section it doesnt counts it towards total.. e.g. i have 2 x 2gb sticks and two 4gb sticks though bios correctly identifies capacity of each bank but in total section it says 4gb ram (instead of 12gb).

i booted to windows ... windows also shows only 4gb but cpuz sees ram in each slot and shows total as 12gb..

i have tried bios a16 through a22 non worked. also tried a09 version ..

help .. if anyone suspects it to be bios issue.

[chamjisky]

someone move this thread to correct section please

[chamjisky]

A bump in need is a bump indeed

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