All of RAM is not being used.

NunezIV · Mar 2, 2014

I am having an issues with my memory. In computer properties it states this.
Installed Memory (RAM): 8.00 GB (3.95 GB usable). What could possible be using up 4 GB of RAM? I have nothing running in the background at all. I am using Windows 7 Enterprise 64-bit. Can anyone help me at all so I can be using the max amount of RAM I possibly can? Thank you.

Beezy · Mar 2, 2014

check motherboard BIOS. add a bit more voltage to DRAM 1.5v to 1.52v . If windows was obtained in certain ways...It could really be 32bit disguised as 64bit?

NunezIV · Mar 2, 2014

Beezy :

I have no idea how to do that. When I hit the key it says to enter bios it takes me to a screen titled "Click Bios 2" From there I have no idea what to do and configure.

InvalidError · Mar 2, 2014

How much RAM does the BIOS report while booting? If it only reports 4GB installed, you can start by resetting the BIOS settings either by unplugging power and removing the CMOS backup battery for a few seconds or shutting down the PC and using the CMOS reset jumper/switch to force the BIOS to re-detect memory the next time it boots.

NunezIV · Mar 2, 2014

InvalidError :

I have no idea how I would do that. I am looking at my motherboard right now and I don't see any type of battery on it, or switch.

Beezy · Mar 2, 2014

http://www.bing.com/images/search?q=CMOS+battery&FORM=HDRSC2#view=detail&id=B9DA8C6FC6DC49CA183AA5D169F29A4AD7F5D577&selectedIndex=6

here is what the CMOS battery looks like, removing it and putting it back in will RESET the BIOS settings, but that may not solve the issue. to update the BIOS you have to get INTO the bios and see what version it is, then you go to the manufacturer website of your motherboard, find the model, find the support page and see what is listed as the latest BIOS version, if the number is higher than what is listed in the BIOS, its out of date and needs to be updated/flash BIOS (to which I would direct you to a different guide). if the ver matches what is on the website then the BIOS is clearly up to date and not the issue .

NunezIV · Mar 2, 2014

Beezy :

Okay so I was able to find the battery and reset it. I also then checked if my bios version was up to date and it is. So I do not know what else it could be. In the bios it reads I have 4 gigs but it shows the two RAM chips I have installed. So it's like it is not using one of them.

InvalidError · Mar 3, 2014

NunezIV :

What are the actual DIMM, CPU and PC chipset model numbers? If it is 8-10 years old hardware, there may have been some early 64bits CPUs or chipsets that did not support more than 4GB physical RAM.

If your PC is not such an antique, try each DIMM separately in each slot, let them run memtest86 for at least one complete pass each to verify that they are both working and if they both pass, try installing them in swapped slots to see if you get better luck that way.

NunezIV · Mar 3, 2014

InvalidError :

Okay so I tried using each DIMM on each slot. For some reason on the left slot my monitor will not turn on with either DIMM, but on the right slot the monitor will turn on with either of the DIMMs being used. Could it actually be something wrong with the slot itself?
Hardware:
Processor: AMD A8-5600k APU with Radeon(tm) HD Graphics 3.60 GHz
RAM: Viper Xtreme 4GB DDR3 1600MHZ (PXD38G1600LLK) - Kingston HyperX 4GB DDR3 1600MHz (KHX1600C9D3/4G)

InvalidError · Mar 3, 2014

NunezIV :

It could be a problem with either the slot, something else on the motherboard or the CPU. Check the DIMM slot itself for bent or missing pins, same for the CPU and CPU socket - though you probably won't be able to see much through the socket's tiny holes.

If you cannot see any obvious signs of something wrong with, then the next step would be to either try your CPU on a known-good motherboard or a known-good CPU on your motherboard.

NunezIV · Mar 3, 2014

InvalidError :

What if I don't have an extra computer to try anything on? All I have is just this one.

InvalidError · Mar 3, 2014

NunezIV :

Most people have friends but if none of yours have compatible parts to attempt swap-outs with or none are willing to try it.

If you bought it pre-built from a store and it is still under warranty, you can try getting warranty service.

If that is not an option either, then you have three more options left:
1- remove the CPU, memory, pull out your digital multimeter, the AM3 socket pinout, the DIMM slot pinout and probe the 200+ pins between the CPU socket and DIMM to see if any of them are open/short (this is going to take you days to do properly and there is a high probability you will miss the problem by accident even if it is there)
2- guess which part is defective, buy a replacement, swap it out and see if that fixes your problem
3- let the PC shop techs figure it out - this might be cheaper than buying the wrong part

NunezIV · Mar 3, 2014

InvalidError :

All my friends have high end parts so I doubt they will be compatible. I have been wanting to upgrade since I know my motherboard is like a $60 one, I wouldn't expect anything amazing from it. I am just on a tight budget

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