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So I have this old laptop, a Lenovo ThinkPad T510 and I tried upgrading it's RAM from 2GB to 2*4GB (8GB). I was on a Windows 8 x32, and it worked, but only 3 out of 8GB were usable.

So I tried to install a x64 version of Windows without luck (I was booting from usb and after the Windows logo the laptop shut down and rebooted). So I put back the old 2GB stick and installed x64, now it worked. But if i try to boot with the 8GB on the x64 system, I go in a reboot loop.

Ran memtest86, froze at 54% at accessing memory.

What should I do ?

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  • Is there a firmware update available for your laptop?
    – Burgi
    Commented Jun 15, 2016 at 10:37
  • No, I already have the latest BIOS version but sadly I cannot find any memory timings or frequency configurations, no matter where I look.
    – murarustefaan
    Commented Jun 15, 2016 at 13:32

1 Answer 1

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  • Try to memtest each 4GB module independently.

  • Update the BIOS.

  • Check (on lenovo site) if the module models you have are compatible with the T510. DDR3-L may be incompatible (has different voltage than standard DDR3 module).

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  • DDR3-L as far as I know supports both 1.5V and 1.35V voltages. That's why I bought it in the first place, @Overmind
    – murarustefaan
    Commented Jun 15, 2016 at 13:28
  • Yes, that is correct, but the incompatibility may arise due to BIOS setting detection problems, not the voltage itself.
    – Overmind
    Commented Jun 16, 2016 at 11:31
  • In BIOS they were detected, it showed that I had 8GB's installed, @overmind
    – murarustefaan
    Commented Jun 17, 2016 at 18:37
  • Correct detection is insufficient for correct functionality.
    – Overmind
    Commented Jun 21, 2016 at 9:44

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