Replacement RAM doesn't work

emiels

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Aug 10, 2014
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I bought some replacement RAM yesterday, being assured that it would work on my laptop [I'll post all details at the end]. I just installed the new RAM, booted up and the RAM wasn't recognized. I tried Windows Startup Repair Tool a few time but that didn't load and neither, obviously, did "Boot Windows normally".
I've now put the old RAM back in and booted up so I could get some answers before I try again.

What's my next step here in troubleshooting?
Memtest?
Use one old RAM stick and one new?
The only difference I can see between the two is the speed (1600 vs 1333) but I was assured that this was backwards compatible.
I've checked my BIOS and I don't have any options for memory management (probably related to SONY not wanting people to overclock) so I don't know how I could solve this if there was, for example, a difference in voltages between the two RAMs.

I would really appreciate some advice on this.
Cheers!

Details:

Windows 7 Home Premium x64
SONY VAIO VPCEB2S1E

Old RAM: Kingston 2x2GB
Model: SNY1333D3S9DR8/2G
From CPU-Z:
Memory Type DDR3
Memory Size 4 GBytes
Channels Dual, (Symmetric)
Memory Frequency 532.1 MHz (4:16)
CAS# latency (CL) 7.0
RAS# to CAS# delay (tRCD) 7
RAS# Precharge (tRP) 7
Cycle Time (tRAS) 20
Row Refresh Cycle Time (tRFC) 60
Command Rate (CR) 1T
MCHBAR I/O Base address 0x0FED10000
MCHBAR I/O Size 4096

New RAM:
Corsair ValueSelect 2x4GB
Model: CMSO8GX3M2A1600C11
From Corsair site:
Memory Configuration Dual Channel
Memory Type DDR3
Package Memory Format SODIMM
Package Memory Pin 204
Memory Size 8GB Kit (2 x 4GB)
SPD Latency 9-9-9-24
SPD Speed 1333MHz
SPD Voltage 1.5
Speed Rating PC3-12800 (1600MHz)
Tested Latency 11-11-11-27
Tested Speed 1600Mhz
Tested Voltage 1.5
 

emiels

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Aug 10, 2014
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Just a small update:

the RAM is definitely detected in the BIOS whichever the combination I put in.
Windows does not boot when I have a combination of 4GB and 2GB (new and old).

It's definitely (I think) a problem with Windows since it's detected by the BIOS but not Windows.

Any ideas?