Hi all,
After doing the update today, I’m now no longer able to launch Lost Ark because I get a BSOD during the EasyAntiCheat launch.
The BSOD errors vary. including SYSTEM_SERVICE_EXCEPTION or KERNEL_SECURITY_CHECK_FAILURE, with the bug reports appearing in windows logs … very similar to what most other people report.
I’m running Win10 and nothing crazy or overclocked in terms of hardware. I’ve scoured these forums and reddit and couldn’t find a solution yet. Needless to say, the simple ones like Repair EAC didn’t work.
Am I the only one getting this? 
What is your hardware? Are you sure you have absolutely no overclocks at all since you last completely wiped your CMOS? Sometimes these things only act up in certain programs but eventually hit everything
For example I thought that my issues were only with one application but eventually it hit everything. The culprit was not having the correct SSD driver for me personally.
Could be the game itself though but if no one else is getting it it’s likely your BIOS settings. If you have some time you could just reset your BIOS
Unplug your pc. Take out the motherboard battery. Put a metal thing to the CMOS pins (check your motherboard manual)
See if it helps. Good luck, BSOD are extremely frustrating
Same problem here!
BSOD during the EasyAnticheat launch.
I tried all the solutions presented by the other users and they didn’t work.
Sorry for my english, I’m Brazilian and my native language is portuguese.
Open task manager before you launch the game. As soon as you hit “play” find EAC under processes and end it. When you do that it’ll restart EAC and backsplash should load. I’ve tried everything posted on the internet, but someone commented this on my reddit post and it worked for me. Bear in mind, this was before patch - wasn’t able to play basically since Friday last week until yesterday evening when I finally came across that trick. Really hope it works for you, I know how much it sucks.
I am having the same issue but it just started for me today and has BSOD’d 5/5 times trying to launch Lost Ark and I was able to play Lost Ark fine yesterday. I have already tried display driver updates and it is only happening with Lost Ark on EAC launch with the BSOD KERNEL_SECURITY_CHECK_FAILURE. I tried the repair as sysadmin mentioned in other threads to no avail. I have not otherwise made any changes or have any overclocks running on my system and I have not had a BSOD in years.
I am in the same position. Getting the BSOD on both home computer and Laptop. Only started today. KERNEL_SECURITY_CHECK_FAILURE is the general message. Drivers are all up to date, uninstalled LA and reinstalled on both devices and the same issue. No other games were affected, and computers running fine otherwise. Noting special about either device, not overclocked or any special setup. ran fine from initial install in Feb. Got the laptop out when the main PC started to blue screen and it is replicated on my laptop. Exactly the same issue, launch easy anti-cheat, and as it gets to 100% it blue screens with a KERNEL_SECURITY_CHECK_FAILURE message (Although the message has changed a few times). Any suggestions that are not “update drivers or reinstall game” ?? Both are unhelpful as drivers are fully updated and the game has been reinstalled. Many thanks.