acer 4741z Ram upgrade fail...please help

Here is the current detail of my Notebook memory by CPU-Z

And I tried to replace one of the 1Gb module with 4gb Corsair value select model no (CMO4GX3M1A1333C9).

But the laptop wont start beyond bios logo and if I do start up repair the blue screen error comes.
I have tried every combination like using different slots for new ram or using only new ram.

Acer 4741Z current details
Northbridge Intel Havendale/Clarkdale Host Bridge rev. 12
Southbridge Intel HM55 rev. 05
Memory Type DDR3
Memory Size 3072 MBytes
Channels Dual, (Symmetric)
Memory Frequency 532.0 MHz (4:16)
CAS# latency (CL) 7.0
RAS# to CAS# delay (tRCD) 7
RAS# Precharge (tRP) 7
Cycle Time (tRAS) 20

DIMM # 1
SMBus address 0x50
Memory type DDR3
Module format SO-DIMM
Manufacturer (ID) Elpida (7F7FFE0000000000)
Size 1024 MBytes
Max bandwidth PC3-10700 (667 MHz)
Part number EBJ10UE8BDS0-DJ-F
Serial number A2231370
Manufacturing date Week 14/Year 10
Number of banks 8
Nominal Voltage 1.50 Volts
EPP no
XMP no
AMP no
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 5.0-5-5-14-19 @ 380 MHz
JEDEC #2 6.0-6-6-17-23 @ 457 MHz
JEDEC #3 7.0-7-7-20-27 @ 533 MHz
JEDEC #4 8.0-8-8-22-30 @ 609 MHz
JEDEC #5 9.0-9-9-25-34 @ 685 MHz
3 answers Last reply
More about acer 4741z ram upgrade fail
  1. does your computer boot normally with the old ram? if it does, then it could be that the new ram is faulty.

    if you can, get a copy of memtest and test the new ram.
  2. Does the laptop support 4GB sticks, is this a supported stick....laptops are very picky about the DRAM they take and aren't like a desktop where you can adjust timings and voltages....the stick is prob good but isn't compatible
  3. the laptop is upgradable to 8gb of ram, BUT it says it uses 1066Mhz ram. so that may be the problem.
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