Windows 10: Not all of my RAM is shown as usable

I have a Lenovo running Windows 10 Pro. System - About said that I had 4GB of RAM installed, but only 1.88 GB usable. So I ran a Crucial.com scan and bought a compatible 8GB RAM chip. Now it says I have 8GB of RAM installed, but still only 1.88GB usable.

Following advice in the forum, I went to System Configuration - Boot - Advanced Options, and verified that Maximum Memory is not checked.

Any advice would be much appreciated.

:)

 

Intalled RAM not showing how much it is usable.

That's not where it's shown. The only time usable RAM is shown in System Information is when windows cannot use all the RAM that is fitted to the PC. For example it may show 8GB (7.5GB usable).

Your system has 8 GB fitted and it is all available to use.

 

Intalled RAM not showing how much it is usable.

Ok but why usable RAM is not showing in System Information.I want the usable RAM to be shown there

 

You don't say whether you're running 32- or 64-bit Win10. You might try filling out your System Specs more completely so we can get that info without having to ask for it. The only way I can see this happening is if
(a) you're running 32-bit Win10
(b) the onboard graphics (and perhaps other stuff, like a RAM Disk?) are chewing up substantial memory overhead
What make and model of Lenovo do you have? What's your OS bittedness (32 or 64)?
If you tell us more, we'll return in kind.

I, for example, have two Lenovo laptops: an X220 Tablet with 16 GB RAM, and a T420 laptop with 16 GB RAM. Each shows 15.9 GB RAM usable, because I lose 128MB to various system overhead elements. If you like, you can grab and run CPU-Z to see how much RAM is allocated to video on your system. CPU-Z tells me that 2108 MB of that RAM is allocated to the Intel HD3000 graphics circuitry on the mobo.



You could do likewise, and report back!
--Ed--

 

Sorry. It's Windows 10 Pro 64 bit. Part of the CPU-Z report is below; the full report is attached.





Code: Processors Information ------------------------------------------------------------------------- Processor 1 ID = 0 Number of cores 4 (max 4) Number of threads 4 (max 4) Name Intel Pentium J3710 Codename Braswell Specification Intel(R) Pentium(R) CPU J3710 @ 1.60GHz Package (platform ID) Socket 1170 BGA (0x0) CPUID 6.C.4 Extended CPUID 6.4C Core Stepping Technology 14 nm Tjmax 90.0 °C Core Speed 1599.3 MHz Multiplier x Bus Speed 20.0 x 80.0 MHz Stock frequency 1600 MHz Instructions sets MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, EM64T, VT-x, AES L1 Data cache 4 x 24 KBytes, 6-way set associative, 64-byte line size L1 Instruction cache 4 x 32 KBytes, 8-way set associative, 64-byte line size L2 cache 2 x 1024 KBytes, 16-way set associative, 64-byte line size FID/VID Control yes Chipset ------------------------------------------------------------------------- Northbridge Intel Braswell Host Bridge rev. 35 Southbridge Intel Braswell LPC Bridge rev. 35 Memory Type DDR3 Memory Size 8 GBytes Memory Frequency 1599.3 MHz (1:20) CAS# latency (CL) 11.0 RAS# to CAS# delay (tRCD) 11 RAS# Precharge (tRP) 11 Cycle Time (tRAS) 28 Command Rate (CR) 1T Host Bridge 0x2280 SBR[1:1] 0x1344C630 SBR[1:2] 0x65C70A05 SBR[1:3] 0x60B28205 Memory SPD ------------------------------------------------------------------------- DIMM # 1 SMBus address 0x50 Memory type DDR3 Module format SO-DIMM Manufacturer (ID) Crucial Technology (7F7F7F7F7F9B00000000) Size 8192 MBytes Max bandwidth PC3-12800 (800 MHz) Part number CT102464BF160B.M16 Serial number E021D8DF Manufacturing date Week 37/Year 16 Number of banks 8 Nominal Voltage 1.35 Volts EPP no XMP no AMP no DMI Physical Memory Array location Motherboard usage System Memory correction None max capacity 8192 MBytes max# of devices 1 DMI Memory Device designation ChannelA-DIMM0 format SODIMM type unknown total width 8 bits data width 8 bits size 8192 MBytes Graphic APIs ------------------------------------------------------------------------- API Intel I/O Display Adapters ------------------------------------------------------------------------- Display adapter 0 Display name \\.\DISPLAY1 Name Intel(R) HD Graphics Board Manufacturer Lenovo Memory size 1024 MB PCI device bus 0 (0x0), device 2 (0x2), function 0 (0x0) Vendor ID 0x8086 (0x17AA) Model ID 0x22B1 (0x361A) Performance Level 0 Software ------------------------------------------------------------------------- Windows Version Microsoft Windows 10 (10.0) Professional 64-bit (Build 14393) DirectX Version 12.0[/quote]

 

OK, so you're losing 1 GB of RAM to the Intel HD graphics. That still leaves 5.2 GB unaccounted for. It's also fascinating that the number didn't change when upping RAM from 4 to 8 GB. Something weird is truly up. This Feb 2016 thread says that the OP opened the PC (laptop), removed the memory module, then reseated same and was then able to use all of his memory. You might want to try this, too. Others went into BIOS and made changes to make sure it sees all 8 GB. Here;'s a Tom's Hardware thread that mentions reducing memory speed as a way to get things working, along with other helpful hints.

Hope you find something helpful or useful amidst all these possible corrective strategies. If none of this works, you may want to consider taking your PC into a shop for diagnosis and repair. They might be able to find and fix something we've missed completely in these discussions.

HTH,
--Ed--