replaced original 128GB SSD with a new 256GB SSD that is not only twice as big as the original, but also twice as fast
recently installed a new battery
Cons:
"L" key works only intermittently. Other keys work fine.
Possible workarounds: fix it if you can; use software to repurpose the semicolon key as an "L" key (this is what I do); use external keyboard; don't use words containing "L"s.
Please do not message this poster about other commercial services.