07-27-2018 08:25 AM - edited 07-27-2018 01:10 PM
After upgrading the BIOS, I am having an issue with my battery.
I finally got around to troubleshooting an outstanding issue with my RAM (It was maxing out at 10 of my 20gb of RAM), I found that updating my BIOS resolved the issue. I purchased the laptop in May 2016, and this was the first time I had updated my BIOS. I used Lenovo Solution Center / Vantage to run the updates. I updated my BIOS to N1CET68W (6/20/18).
After updating the BIOS to solve one issue, it caused another. One of my batteries no longer works. Here's some additional details..
While troubleshooting I ran battery report, and I don't think it is a coincidence that the date I updated the BIOS on is also the date at which one of my batteries stopped working - Attached with a line drawn for when I updated the BIOS.
My battery now caps out at 62%. Battery 1: 68% and charging. Battery 2: 0%. Battery 2 will not charge any more.
Battery 1: 00HW022, Sanyo. Design Capacity: 23510 mWh, full charge capacity: 17840mWh (Acceptable degradation for 2 year old battery)
Battery 2: 01AV406, SMP. Design Capacity: 26060 mWh, full charge capacity: 1770mWh (Significant drop-off once BIOS updated).
I have already performed laptop surgery and made sure both batteries are connected. Unplugged both of them, and hard reset my laptop (holding power button for ~2 minutes with batteries out). I tried uninstalling and reinstalling the drivers, and then updating them.
Windows 10 x64.
07-27-2018 11:36 AM
Some BIOS ROMs released actually have downgraded memory. I have seen that on more than a few machines.
You should by convention use RAM in pairs of the same make/model so that memory will run in dual channel mode with more aggregate bandwidth.
DDR2, DDR3 and DDR4 are all the same, use them in pairs
07-27-2018 01:08 PM