HP Probook 4520s Memory upgrade to 8GB (2x4GB) Corsair Unsuccessful and Failed

Ok, here is the story
My notebook is HP Probook 4520s
with Windows Windows 8.1 (6.3) 64-bit (Build 9600)
Please refer to the end of this post for CPU-Z report of specs.
Currently I have 3GB of memory installed -had to install them back after upgrade failure-.
Please refer again to the CPU-Z report for the memory module specifications.
I bought the following Corsair 2x4GB memory pack
Corsair CMSO8GX3M2A1333C9 8GB (2x4GB) 1333MHz DDR3 SODIMM
http://www.scorptec.com.au/product/Memory/SODIMM/43657-CMSO8GX3M2A1333C9
Specs of new modules:
Warranty Lifetime
Size 8GB Kit (2 x 4GB)
Performance Profile none
Fan Included No
Heat Spreader—
Memory Configuration Dual Channel
Memory Type DDR3
Package - Memory Pin 204
Package - Memory Format SODIMM
Tested Voltage 1.5
SPD Voltage 1.5
Speed Rating PC3-10600 (1333MHz)
SPD Speed 1333MHz
Tested Speed 1333Mhz
Tested Latency 9-9-9-24
SPD Latency 9-9-9-24
When I installed the memory module onto the notebook, I basically couldn't go beyond the POST stage. That is the HP logo appears on the screen, and that's it.. that's it.. nothing beyond that stage.
When I went to the BIOS settings, the memory successfully read 81xxMB, this is basically 8GB of RAM.
I tried to reset BIOS settings, failed again.
I removed the 2x4GB modules, put back both original 1GB and 2GB modules -the ones that came with the notebook-, everything worked again.
What went wrong here..?
P.S. please do not reply with lame replies like "that's weird" "that's strange", I know it's weird and strange. I want specific and clear suggestions.
CPU-Z report below:
CPU-Z TXT Report
Binaries
CPU-Z version 1.69.0.x64
Processors
Number of processors 1
Number of threads 4
APICs
Processor 0
-- Core 0
-- Thread 0 0
-- Thread 1 1
-- Core 2
-- Thread 0 4
-- Thread 1 5
Timers
ACPI timer 3.580 MHz
HPET timer 14.318 MHz
Perf timer 2.208 MHz
Sys timer 1.000 KHz
BCLK timer 133.02 MHz
Processors Information
Processor 1 ID = 0
Number of cores 2 (max 8)
Number of threads 4 (max 16)
Name Intel Core i5 430M
Codename Arrandale
Specification Intel(R) Core(TM) i5 CPU M 430 @ 2.27GHz
Package (platform ID) Socket 989 rPGA (0x4)
CPUID 6.5.2
Extended CPUID 6.25
Core Stepping C2
Technology 32 nm
TDP Limit 25 Watts
Core Speed 2527.3 MHz
Multiplier x Bus Speed 19.0 x 133.0 MHz
Rated Bus speed 2394.3 MHz
Stock frequency 2266 MHz
Instructions sets MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, EM64T, VT-x
L1 Data cache 2 x 32 KBytes, 8-way set associative, 64-byte line size
L1 Instruction cache 2 x 32 KBytes, 4-way set associative, 64-byte line size
L2 cache 2 x 256 KBytes, 8-way set associative, 64-byte line size
L3 cache 3 MBytes, 12-way set associative, 64-byte line size
FID/VID Control yes
Turbo Mode supported, enabled
Max turbo frequency 2533 MHz
Max non-turbo ratio 17x
Max turbo ratio 19x
Max efficiency ratio 9x
TDC Limit 21 Amps
Core TDP 21 Watts
Uncore TDP 4 Watts
Power @ 9x 7 Watts
Power @ 10x 8 Watts
Power @ 11x 9 Watts
Power @ 12x 11 Watts
Power @ 13x 13 Watts
Power @ 14x 15 Watts
Power @ 15x 18 Watts
Power @ 16x 21 Watts
Power @ 17x 25 Watts
Max bus number 255
Attached device PCI device at bus 255, device 2, function 1
Chipset
Northbridge Intel Havendale/Clarkdale Host Bridge rev. 12
Southbridge Intel HM57 rev. 06
Graphic Interface PCI-Express
PCI-E Link Width x16
PCI-E Max Link Width x16
Memory Type DDR3
Memory Size 3 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
MCHBAR registers
DMI
DMI BIOS
vendor Hewlett-Packard
version 68AZZ Ver. F.0F
date 02/18/2011
ROM size 2560 KB
DMI System Information
manufacturer Hewlett-Packard
product HP ProBook 4520s
version unknown
serial 2CE0211M4C
UUID {1520830E-6A57-11DF-8C36-42C05900004D}
SKU WS879EA#ABV
family 103C_5336AN
DMI Baseboard
vendor Hewlett-Packard
model 1411
revision KBC Version 57.34
serial 2CE0211M4C
DMI System Enclosure
manufacturer Hewlett-Packard
chassis type Notebook
chassis serial 2CE0211M4C
DMI Processor
manufacturer Intel(R) Corporation
model Intel(R) Core(TM) i5 CPU M 430 @ 2.27GHz
clock speed 2264.0 MHz
FSB speed 133.0 MHz
multiplier 17.0x
DMI Extension Slot
designation PCI SLOT1
type PCI
width 32 bits
populated no
DMI OEM Strings
string[0] ABS 70/71 79 7A 7B 7C
string[1] CSM v01.4A
string[2] www.hp.com
DMI Physical Memory Array
location Motherboard
usage System Memory
correction None
max capacity 8192 MBytes
max# of devices 2
DMI Memory Device
designation Top-Slot 1(top)
format SODIMM
type unknown
total width 64 bits
data width 64 bits
size 2048 MBytes
DMI Memory Device
designation Top-Slot 2(under)
format SODIMM
type unknown
total width 64 bits
data width 64 bits
size 1024 MBytes
Storage
Drive 0
Device Path \\?\scsi#disk&ven_&prod_st9320423as#4&1f4bc32b&0&000000#{53f56307-b6bf-11d0-94f2-00a0c91efb8b}
Type Fixed
Name ST9320423AS
Capacity 298.1 GB
SMART Support Yes
USB Devices
USB Device Generic USB Hub, class="0x09", subclass=0x00, vendor=0x8087, product=0x0020
USB Device USB Composite Device, class="0xEF", subclass=0x02, vendor=0x0461, product=0x4DB6
USB Device Generic USB Hub, class="0x09", subclass=0x00, vendor=0x8087, product=0x0020
USB Device Microsoft Mouse and Keyboard Detection Driver (USB), class="0x00", subclass=0x00, vendor=0x045E, product=0x0745
Graphics
Number of adapters 1
Graphic APIs
API ATI I/O
Display Adapters
Display adapter 0
Name ATI Mobility Radeon HD 4500 Series (Microsoft Corporation - WDDM v1.1)
Board Manufacturer 0x103C (0x1411)
Memory size 512 MB
PCI device bus 1 (0x1), device 0 (0x0), function 0 (0x0)
Vendor ID 0x1002 (0x103C)
Model ID 0x9555 (0x1411)
Performance Level 0
Win32_VideoController AdapterRAM = 0x20000000 (536870912)
Win32_VideoController DriverVersion = 8.97.10.6
Win32_VideoController DriverDate = 06/20/2012
Software
Windows Version Microsoft Windows 8.1 (6.3) 64-bit (Build 9600)
DirectX Version 11.0
This question was solved.
View Solution.

Specific and clear. Your laptop uses 1.35 volt memory and you installed 1.5 volt.
Here is the crucial page for the memory you need:
http://www.crucial.com/store/listparts.aspx?model=ProBook%204520s
If this is "the Answer" please click "Accept as Solution" to help others find it.

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You're very welcome.
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Hi,
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Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

Memory upgrade not working

I ordered 8GB memory for my imac mid-2011 model.
I then tried to install and all I'm getting is three beeps telling me there's something wrong with my memory.
I've tried all configurations but can't get the 2x4gb modules to work.
I've had to stay with only the original 2x2gb ones it came with.
Can anyone please help.
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Which would seem to suggest that you may (unusually) have a doubtful memory module. Less unusually, you would have paid over the top for it.
Many people on these forums speak well of the following suppliers.
In North America contact OWC … Upgrade Apple iMac Memory
In Europe contact Crucial.com … RAM Memory Upgrade
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Memory upgrades and battery scratches

Good afternoon all!
I couldn't find where to email Lenovo directly so unfortunately I'm going to have to post here.
I'm probably going to catch some flak for this but hey ho, so heres the thing, I bought two brand new Lenovo 3000 N100's 5 years ago, all good, they both came with a 512MB SO-DIMM and since I wanted more memory I bought 2x1GB SO-DIMM's which I put in mine and put the other 512MB in the other one giving mine 2GB of RAM and my mum's 1GB of RAM.
Doing this was easy peasy, unscrew *ONE* screw and the flap just slides out of the two slots on the opposite side of the flap to the screw. Job done.
Scroll forwards 5 years and times have moved on... a lot and it seems like we apparently need to MASSIVELY over engineer things now.
So I bought three Lenovo 3000 G570's, all good stuff and all came with 1x2GB and 1x4GB for a total of 6GB, all good but me being me and a Firefox tab whore, what with RAM being so awesomely cheap I decided what I was going to do was get 8GB (2x4GB) SO-DIMMS (Corsair), take out ALL my existing memory, put in the new Corsair 2x4GB SO-DIMMS, take out the 2GB SO-DIMM from the one I got my sister and put in my now spare 4GB SO-DIMM giving me 8GB of RAM, my sister 8GB of RAM, my mum sticks with 6GB of RAM and I have 2x2GB SO-DIMM's left over spare.
SO, my sister and mum have already unboxed theirs and all is well, I unboxed mine, flipped it over and there are no less than *FOUR* screws holding the flap in now, granted there is just one 'flap' covering the CPU/RAM/HDD/WIFI/etc so okay fair enough, it's a big 'flap' after all.
So I undo said four screws and I should just be able to slide the panel out now right? Wrong, obviously four screws were deemed not nearly enough to keep it in place, so there are now tabs which are actually clipped in around pretty much all sides of this panel.
Well okay this can't be difficult right? Wrong. Now I'm a firm believer in the notion that if it won't budge don't just keep applying more and more force until something breaks. So I'm looking all over this thing, testing it gently from different sides to see if I can prise it open but it's becoming quickly apparent that I'm expected to BEND the panel so I can get the tabs out around the sides!
MASSIVELY over engineered and COMPLETELY unnecessary, were the FOUR screws not already holding it in place okay? It certainly seemed that they were? Okay so I need to bend the panel to get the tabs out but I'm guessing it's a reasonably easy thing to do not requiring much force right? Wrong. So it became quickly apparent then I'm going to need quite a bit of force, the problem is it's the kind of force that requires a flat head screwdriver and despite my best efforts it was impossible not to mark the bottom of my nice shiny brand new laptop! But that's not the end of it.....
So I've undone the four screws and I've managed to bend the panel and prize out all that tabs as gently as possible all whilst doing my best to try not slip the screwdriver underneath the panel taking a nice stab at the motherboard/memory/CPU/wifi/etc underneath because that would just *really* make my day, so the four screws and numerous tabs would be it right? Wrong. It appears that there is something underneath the panel STILL holding on, "more tabs?!" I cry in despair as my engineering family background cries out "WHY LENOVO GODS? WHY?!!! Does this panel need to survive a thermonuclear explosion?! Does it need to stay on whilst being driven over by a tank?! WHY?!".
So I'm trying everything, gently wriggling it this way, wriggling it that way, lifting it this side, lifting it that side, EVERY conceivable way of removing the final tab underneath I tried.... and failed. I pour through all the manuals again, maybe I've missed something? Maybe I'm just being completely thick (it's not unknown to happen)? But no, the manual makes it sound as easy as breathing so I give it one last try, I lift the panel putting more and more force through it until eventually BANG it comes off.... and I sit there staring.... laptop on the table.... the panel in my hands.... and the now broken tab.....
link to image
....wonderful.
With sigh I proceeded to install the new memory and replace the panel which now ironically goes on and comes off again SIGNIFICANTLY easier now the tab underneath has broken off and do you know what? The panel doesn't seem to have lost any of it's ability to stay in place? Funny that.
The other funny thing is that when I go to 'upgrade' my sisters laptop, the panel comes off EASILY! Maybe during assemble mine was done differently? Maybe the tolerances on mine just made it too tight to come off easily but with another sigh I go to put the battery in my new laptop so I can check all is well and what do I find?
The battery has scratches all over it:
link to image
All three brand new laptop boxes had the Lenovo seal on them so the retail store couldn't have opened it and my sister's and mum's laptop's were all fine?
So dear Lenovo, I love buying your laptops, I've bought five already, I'd buy again but would you be so generous as to send me a new panel and battery? I'd really appreciate your help.
Regards,
Benji
image(s) >50k converted to link(s).

hey LondonBenji,
awesome post that looks like a TARDIS... "Bigger on the inside". Anyway, sorry to hear on what had happened, I suggest giving our support team a call via
Tel. +44 (0) 870 608 4465
Mon-Fri 9am-6pm
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Is it possible to add 16GB (2x8GB) of ram to the stock 8GB (2x4GB) that is already in the iMac? A total of 24GB (2x4GB, and 2x8GB)

Purchasing the new 27" iMac
Is it possible to add 16GB (2x8GB) of ram to the stock 8GB (2x4GB) that is already in the iMac?
A total of 24GB (2x4GB, and 2x8GB)
upgrading memory on the new iMac 27"3.4GHz Quad-core Intel Core i7,
8GB 1600MHz DDR3 SDRAM - 2x4GB
3TB Fusion drive

You can do it without any problem, but make sure you put the memory horizontally, so you will get the advantages of the Dual Channel. You can buy the memory in OWC or Crucial to make sure you have a compatible memory

HP Probook 4520s Memory upgrade to 8GB (2x4GB) Corsair Unsuccessf​ul and Failed

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HP Probook 4520s Memory upgrade to 8GB (2x4GB) Corsair Unsuccessful and Failed