RAM issues after BIOS update

Uuyucool2012

Honorable
Dec 16, 2012
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Hi,

I have a Lenovo Ideapad y410p, and yesterday I updated my BIOS to version 3.08 which was for Haswell based Windows 8.1 x64 OS.
After flashing the BIOS, I noticed that my games were taking too long to load, minecraft was freezing. I had set the minecraft client to use 3.25 gb of RAM since I have 8 gb.
When I opened up task manager, it registers only 4 gb of RAM and only 1 out of 4 RAM (instead of 2) slots are being used.

Somehow flashing the new BIOS made it disable the second RAM, I'm not sure. I was wondering how I could revert my BIOS back to original version.

DxDiag
TaskManager

Thank you.


UPDATE:

So I opened up my laptop. There are 2 RAM slots with 4 gb RAM in each.
Interchanging the RAM sticks has no effect, while on removing either of the RAM sticks the system does not boot.

UPDATE 2:

I looked up CPU-Z on the SPD tab and here is what I found:

  • Slot 1 in Memory Slot Selection shows DDR3 ram with 4gb memory.
    Slot 2 shows DDR3 ram with only 512 MB memory(instead of 4096 MB).:??:
CPU-Z Log
 

Uuyucool2012

Honorable
Dec 16, 2012
11
0
10,560


The thing is that, the BIOS is locked. All the advanced settings are hidden from the user.
To make them show, one will have to flash a modded BIOS.