Lenovo T61p not recognizing memory

I have a single 4GB memory card in Slot 0. I'm 64-bit. Windows 7.
However, My system shows that only 2GB is installed.
How do I get it to know that I have 4GB?
Solved!
Go to Solution.

Welcome to the forum!
ewoodwardjohnso wrote:
I have a single 4GB memory card in Slot 0. I'm 64-bit. Windows 7.
However, My system shows that only 2GB is installed.
Can you post a picture of the RAM module?
n2ubp wrote:
The T61P takes 4gb of memory in total but each memory slot can only handle 2gb modules. For 4gb total you need qty 2, 2gb memory modules. www.Crucial.com is your friend for easy access to these kind of specs for many different manufacturers.
I'm afraid this is not correct.
T61x can handle up to 8GB RAM, 4GB do work as long as it's not a kind no-name shady RAM brands, some Corsair from the Value Select line do often cause trouble as well.
I have three 15.4 T61, a 14.1 wide T61 and a X61 using 8GB RAM, mostly using 4GB Kingston Hyper X Modules.
The original specs mentioned by Lenovo with a max of RAM of 4GB was because the time this series was released there were no 4GB modules available
/L40SX/240/240X/2*340CSE/360PE/365XD/380D/380E/380XD/380Z/390/560E/560X/2*570/2*600/600E/750Cs/755C/760CD/760EL/760XD/770E/A20p/A22p
A31/i1600/G40/R50p/R61i/S30/SL510/2*T22/4*T4x/11*T6x/6*T4x0x/6*T5x0/3*W5x0/W700/3*X2x/4*X3x/3*X4x/5*X6x/3*X6xT/10*X2xx/2*X200T/4*X30x/Z60m/3*Z61x
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Screen: 14.1-inch SXGA+ (1400x1050) TFT Display in 4:3 non-widescreen.
Processor: 2.4GHz Intel Core 2 Duo T7700 (4MB L2 Cache,800MHz FSB)
Hard Drive: 100 GB hard drive (Seagate 7200RPM)
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Optical Drive: DVD+-R Double layer / DVD+-RW Drive
1GB Ethernet and Modem, built-in SmartCard, one PCMCIA, no SD Card reader.
Wireless: WiFi (Intel 4965AGN 802.11a/b/g/n), Bluetooth 2.0 w/ EDR
Graphics: NVIDIA Quadro FX 570M (128MB)
Operating System: Windows 7 Home Premium(Licence Windows Vista Ultimate)
Part numbers:
TYPE: 8889-3DG
S/N: --/-----
DATE: 08/04
FRU(next to the battery plugs): 42W7650
BARCODE(next to the battery, right of the FRU) : P42W3811
Mod edit: removed S/N
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