06-15-2019 08:04 PM
After reading several threads in this forum, I decided to upgrade the RAM from 4GB to 16GB. I followed the sequence to disable the internal battery first, then remove and put back in the new RAM. However, when I power it up, the keyboard light was on and then off, but the screen still black with power button light on.
I have tried the suggestion here but did not work. (https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/Lenovo-Thinkpad-T460s-not-booting/td-p/4... and https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/T460s-Lenovo-turns-on-but-has-a-black-bl...)
where I disconnect the two battery and the internal CMOS battery and then press the power button 3 times and last time holds longer. But it did not help.
Could someone give me some suggestions?
Thank you in advance.
06-19-2019 09:59 AM
I check the T460s service manual, It listed 16GB option. On my laptop, it has a 4GB solder on the motherboard with another in the 4GB DIMM slot. After I put back my original 4GB in, the laptop returned back to normal. I do not know if the RAM is bad or there is something I need to set up.
06-19-2019 01:20 PM
16GB DIMM is fine, but with some brands of RAM, compatibility can be an issue. As stated above, the first boot after changing RAM can take a long time, up to two full minutes. RAM with a Lenovo FRU is always the safest choices, but people have their favorite brands of non-Lenovo RAM. I have had good luck with Corsair Vengeance, but others have different opinions.
06-19-2019 05:09 PM
Thanks Rick. I have waited for almost 5 minutes but the system just did not boot up. Maybe I should wait even longer? The RAM was purchased from Micron. I might consider the brand you mentioned. Thanks.