07-15-2009 07:59 PM
I recently bought myself a used Thinkpad T61 that comes with Vista Ultimate 32-Bit, 2GB of RAM, and 2.0GHz C2D.
I decided that I needed an extra stick of 2GB RAM to replace one of the OEM 1GB sticks so I bought a stick of Kingston ValueRam (Product number: KVR667D2S0/2GR) that matched the specs of the old RAM. However, after I installed the new Kingston RAM, the BIOS and Vista only recognize 1.5 GB of RAM instead of 3GB. Basically, only 512 MB of the Kingston RAM is being recognized (and I can confirm by using the Kingston RAM alone).
I tried mixing which sticks are in which slot, but that does not solve the problem. I also updated to BIOS to the latest version, 2.26.
Any help would be greatly appreciated.
07-15-2009 08:18 PM
Try CPU-Z and see what the software says about the ram.
if 512 mb of the 2 gig of ram comes up, it usually says that your ram modules have defective chips, probably nothing to do with your bios or ram slots....return the purchased ram module for a new one. The T61 are capable of 8 gigs of ram under 64 bit of OS.
07-15-2009 09:46 PM
Thank you for the quick reply.
I just ran both a MemTest86 and CPU-Z and both come up with nothing abnormal.
MemTest86 gives a pass and CPU-Z gives the same results as when I checked with the OEM RAM installed, but with only 1.5GB registered.
So is it still bad RAM even if MemTest86 gives a pass?
07-15-2009 10:02 PM
07-15-2009 10:07 PM
Yes, the 2GB (I just bought) + 1GB (that came with the laptop) only registers as 1.5GB.
Also, I have no idea whether this laptop is still under warranty, althought I highly doubt it is.
07-15-2009 10:08 PM
07-15-2009 10:19 PM
Slot #1 says 1024 MBytes and Slot #2 says 512 MBytes.
And I just looked it up on the main support site and the laptop is actually still in warranty, although I doubt it is necessary in this case.
07-16-2009 12:15 AM
07-16-2009 12:18 AM
Well, I have it as 2 x 1GB right now and it's fine; it reads 2GB.
I'm leaning more and more towards a defective chip, but I really need to test this RAM in another laptop before I can be sure.
07-16-2009 01:04 AM