03-20-2019 10:07 AM - edited 03-20-2019 10:11 AM
Like many users on these forums and other sites I purchased my Y50-70 laptop, installed windows 10 only to be happily using it when suddenly there woud be a 'pop' soundand the whole thing would shutdown instantly.
Searching the forums many people suggested it could be the 'COM Server application' which appears in the event log of the system. People suggested altering the registrysettings to fix this -this reduced the problem but didn't solve it as there would still be random sudden crashes. Others suggested driver changes, reverting a windows update, chaning the power supply, etc - nothing really worked and it stil crashed.
Now to the solution! Simply put - I changed the wifi card - why? I was thinking of changing the OS to see if Windows 10 was the problem.
After changing the wifi card my laptop has not crashed once - not once! This has now been over four months and I have had a perfectly stable system, it's great! Also changing the card is really simple. Best part is, I'm still running Windows 10!
1 - I bought this 'Broadcom BCM94352Z DW1560 NGFF 802.11AC Wifi Bluetooth 4.0 For Lenovo B50-70' from https://www.ebay.com.au/itm/273363492201, if the link doesn't work there's plenty of these around.
2 - I installed it (really simple) with plenty of install videos like this one https://www.youtube.com/watch?v=YhTPRpiqlsY
3 - Windows detected it and it worked perfectly!
I've been wanting to post this for awhile hoping to help people who have this problem.
I hope this heps people on the forum, let me knowhow you go!
03-20-2019 01:58 PM
Welcome to the Community Forums.
Thanks for sharing your solution to the described issue that fellow members in the Community may have the opportunity to explore on the similar issue.
Please don't hesitate to share your ideas at anytime.
03-22-2019 01:56 PM - edited 03-22-2019 02:02 PM
I have been struggling with this problem for about a year now. I have tried multiple solutions and depo repairs yet nothing has worked. Are you 100% sure this will work for me? I am incredibly desperate for a solution that will put an end to this once and for all!
03-25-2019 12:07 AM
This has dogged me for up to a year too - it's only because I was going to try a different OS that I needed to change the wifi card.
Changing it is easy, also purchase from the link I posted - I'm not sure but maybe there's differences in them.
This is the only thing I changed, now the PC is running Windows 10 latest with all the patches and hasn't crashed once. It's been a long time now. Believe me I tried so many different things offered on forums all claiming to work
Installing the card is easy, just a screw and two connectors - if you'd like to try my solution I'd be interested to hear how you go - I hope it works for you!
Here's my machine's details:
OS Name Microsoft Windows 10 Home
Version 10.0.17134 Build 17134
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name DESKTOP-CMSG07Q
System Manufacturer LENOVO
System Model 20378
System Type x64-based PC
System SKU LENOVO_MT_20378_BU_idea_FM_Lenovo Y50-70
Processor Intel(R) Core(TM) i7-4720HQ CPU @ 2.60GHz, 2601 Mhz, 4 Core(s), 8 Logical Processor(s)
BIOS Version/Date LENOVO 9ECN43WW(V3.03), 12/08/2015
SMBIOS Version 2.7
Embedded Controller Version 3.43
BIOS Mode Legacy
BaseBoard Manufacturer LENOVO
BaseBoard Model Not Available
BaseBoard Name Base Board
Platform Role Mobile
Secure Boot State Unsupported
PCR7 Configuration Binding Not Possible
Windows Directory C:\WINDOWS
System Directory C:\WINDOWS\system32
Boot Device \Device\HarddiskVolume1
Hardware Abstraction Layer Version = "10.0.17134.471"
Time Zone AUS Eastern Summer Time
Installed Physical Memory (RAM) 16.0 GB
Total Physical Memory 15.9 GB
Available Physical Memory 9.02 GB
Total Virtual Memory 18.3 GB
Available Virtual Memory 10.7 GB
Page File Space 2.38 GB
Page File C:\pagefile.sys
Kernel DMA Protection Off
Virtualisation-based security Not enabled
Device Encryption Support Reasons for failed automatic device encryption: TPM is not usable, PCR7 binding is not supported, Hardware Security Test Interface failed and the device is not InstantGo, Un-allowed DMA-capable bus/device(s) detected, TPM is not usable
Hyper-V - VM Monitor Mode Extensions Yes
Hyper-V - Second Level Address Translation Extensions Yes
Hyper-V - Virtualisation Enabled in Firmware No
Hyper-V - Data Execution Protection Yes