I've been suffering from this generic freeze issue with my Lenovo X270 since last September right out of the box.
Unfortunately, Lenovo (Japan) support has been very passive about this and doesn't agree on a full replacement.
The machine has been sent for checkups (four times!), and came back with seemingly irrelevant 1) SSD cable 2) SSD replacement, then on the fourth check they swapped out everything internal.
Yet the problem still persists.
I've made a post on Lenovo community hoping for help and I did, but without much solution.
Answers (N/A if not applicable)
Provide a detailed description of the issue
Win 10 freezes randomly. Inputs are accepted but screen does not refresh, to be exact. (e.g., I open a notepad before freeze. Screen freezes. While freezing, I type "Hello world" to the notepad. Screen does not refresh. Once unfrozen, the inputs are all reflected.)
Issue doesn't seem to be tied to any software as it happened 1) right out of the box 2) Clean OS installation with disk partitions wiped 3) Not too sure but Safe mode. Can't find a thing that triggers the freeze/unfreeze.
The freeze seems to affect only the LFP as I can move my cursor to EFP while the machine freezes. (EFP refreshes normally)
Please place an X to the right of the option showing how often you see this issue using specific steps. (Ex: 'Every few times a game is started it flickers.' <- This would be "Often")
Always (100%): X
Often (51-99%): X
Sporadic (20-50%): X
Very Sporadic (<20%): X
Brand and Model of the system.
Hybrid or switchable graphics system?
Intel HD Graphics 620 only. No other graphics card or such.
Make and model of any Displays that are used to see the issue (see note2 below).
LFP and/or EFP
How much memory [RAM] in the system (see note2 below).
Provide any other hardware needed to replicate the issue.
With or without the following:
1. USB mouse
2. HDMI cable
3. USB C cable
4. AC adapter
5. SIM card
6. SD card
Hardware Stepping (see note1 below).
Operating System version (see note2 below).
Win 10 1709 Build 16299.309
VBIOS (video BIOS) version. This can be found in “information page” of CUI (right click on Desktop and select “Graphics Properties”.
Graphics Driver version; for both integrated Intel and 3rd party vendors (see note2 below).
Intel HD 620 v18.104.22.16849
SW or Apps version used to replicate the issue.
Single display, clone, or extended (see note2 below).
Single display or Extended
Display resolution & refresh rate setting of each display (see note2 below).
1920x1080 @ 60hz on both LFP and EFP
AC or DC mode, i.e. is power cable plugged in or not?
How to repro
Please provide steps to replicate the issue. These steps are very crucial to finding the root cause and fix.
No specific steps to trigger the issue but I have some videos showing the screen before/while/after freezing
I have tried updating to the latest drivers but they seemed to have worse freeze frequency than old ones (e.g.22.214.171.12464).
v126.96.36.19964 had no freeze in a week, but had 7~10 within 30 minutes yesterday night right when I thought this problem was solved.
All drivers are updated to its latest version via LVantage (updater) and online update lookup in Device Manager.
I ran SSD, memtest, and motherboard tests to eliminate hardware issue. Also installed Ubuntu and used it for a while to see if it is a Windows problem; seems like it is limited to Windows.
Lenovo support team has also done a remote session to check my drivers, various settings, and Event Logs but found nothing unusual.
There is no known way to reproduce and is giving me a headache.
Help is much appreciated.