Enable 2nd Ram Slot

• How To Enable All Ram
• Enable Ram Slot 2
• Enable 2nd Ram Slot Chassis
• Enable 2nd Ram Slot Block
• How To Enable Memory Slot
• Enable 2nd Ram Slot Mounts

However if you have 3 working slots and 2 sticks don't work, you also need to RMA RAM Last edited by Arne Saknussemm; at 08:22 AM. ARNE’S GUIDE TO PC BUILDING HAPPINESS. In my old laptop,my ram config was 2gb + 4gb and i faced no issues. So i dont think ratio between ram slots is an issue. Now,I have dell inspiron 7560 and i've planned to do the same but when i researched about it,the company says its recommended.

I've been having RAM issues and can't find any fixes for the problem I have. At some point last year, I noticed in my system information it said for Installed Memory: 6.00 GB (4.00 GB usable). I wasn't sure what the problem was or if Windows 7 was just using 2GB to run. However, recently I decided to purchase 12GB of RAM (3x4GB) and when I installed it, I got Installed Memory: 18.0 GB (6.00 GB usable).
I went into BIOS and saw that it sees all the memory in all 6 slots. But, only slots 1-3 are enabled. What's weirder is that slot 2 has a 4GB stick, but only 2GB is enabled. I don't see any option within BIOS to enable the slots or individually increase each RAM voltage.
Specs:
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How To Enable All Ram

There are two RAM module slots in the Toughbook CF-31, but if you have a first generation (MK1) unit, the second slot is more difficult to access and the process is a bit more involved. Since we used a CF-31 MK1 for this tutorial, we'll focus only on the upgrade slot that can be accessed easily. However, if you are upgrading a later model CF-31, both RAM slots should be accessible from the same panel.

Choosing the right type of RAM

The type of RAM module you will need to buy depends on the MK, or generation, of your Toughbook CF-31.

The RAM module specifications for the CF-31 MK1 are as follows: 204 pins, SO-DIMM, 1.5 V, DDR3 SDRAM with a speed of PC3-10600. You can install up to 4GB of RAM per slot (8GB total, if you access the secondary slot, which we aren't doing in this guide).

The CF-31 MK2 and MK3 can use the same RAM as an MK1 model, but also support the faster PC3-12800 SDRAM. Additionally, you can install up to 8GB per slot.

The CF-31 MK4 and MK5 models require PC3-12800 SDRAM and will not work with the slower 10600 modules. Like the MK2 and MK3, these models support up to 8GB of memory per slot.

Installing the RAM

Installing the RAM module is quick and easy. All you'll need is a Phillips-head screwdriver.

Enable Ram Slot 2

Step one: power down completely.

Enable 2nd Ram Slot Chassis

Shut down your CF-31 completely (don't put it to sleep; don't put it in hibernate), unplug the AC adapter and remove the battery pack (the door for which is located on the left side of the laptop). If you have a secondary battery pack in the multimedia pocket, remove that as well. It's also a good idea to take static electricity precautions.

Step two: remove the panel on the bottom of the unit.

Enable 2nd Ram Slot Block

Turn the laptop over.

How To Enable Memory Slot

There are six screws to unscrew.

Voila!

Step three: if there is a RAM module in there, remove it.

If there isn't a RAM module in there (like in the picture above), then you can skip this step. If there is a module in there that you want to replace, you'll see that there are two clips holding it in.

Gently push the clips outward to release the module, then slide it out.

Step four: insert upgrade RAM module.

You'll notice that there's a bar in the slot that corresponds with a notch in the RAM module. This ensures that you correctly orient the module (it will only go in one way, so don't force it).

Enable 2nd Ram Slot Mounts

Insert your RAM in the slot. (Do it gently; don't RAM it in! Har har har.)

Push the module down just like you'd close a lid. The clips will automatically latch on when it's all the way down.

Step five: finishing up.

Screw the panel cover back on, insert the battery, plug it in and boot it up. You're done.