Driver_Irql_not_less_or_equal (kbdclass.sys)

MisterCrow

MisterCrow

Active member
Had a BSOD on my new laptop - it was the:

"Driver_Irql_not_less_or_equal (kbdclass.sys)" system error.

Doing a quick Google suggests it's a driver problem with the keyboard. I'm not using an external keyboard, so it must be something to do with the built-in one. I've installed all the drivers listed on the downloads page for this machine.

I've done a sfc /scannow and it's not found any problems.
Have done a device manager hardware scan, and it's not found anything. All drivers seem to be installed fine.

Have tried uninstalling Control Center, now testing to see if the BSOD reoccurs.

Laptop spec is in footer (Nova series). Running Win 10 Pro v2004

Looked for updated drivers on the Clevo website for my system (these drivers) but can't seem to download most of them as "file is missing". Weird.

Has anyone else had this problem and managed to solve it? Crash was random (during a game) and has not been frequent.

Thanks
 
SpyderTracks

SpyderTracks

We love you Ukraine
AntBow said:
Had a BSOD on my new laptop - it was the:

"Driver_Irql_not_less_or_equal (kbdclass.sys)" system error.

Doing a quick Google suggests it's a driver problem with the keyboard. I'm not using an external keyboard, so it must be something to do with the built-in one. I've installed all the drivers listed on the downloads page for this machine.

I've done a sfc /scannow and it's not found any problems.
Have done a device manager hardware scan, and it's not found anything. All drivers seem to be installed fine.

Have tried uninstalling Control Center, now testing to see if the BSOD reoccurs.

Laptop spec is in footer (Nova series). Running Win 10 Pro v2004

Looked for updated drivers on the Clevo website for my system (these drivers) but can't seem to download most of them as "file is missing". Weird.

Has anyone else had this problem and managed to solve it? Crash was random (during a game) and has not been frequent.

Thanks
Click to expand...
Can you post your full specs from the order page?
 
MisterCrow

MisterCrow

Active member
Chassis & Display
Nova Series: 15.6" Matte Full HD 144Hz 72% NTSC LED Widescreen (1920x1080)
Processor (CPU)
AMD Ryzen 5 3600 Six Core CPU (3.6GHz-4.2GHz/36MB CACHE/AM4)
Memory (RAM)
16GB Corsair 2666MHz SODIMM DDR4 (2 x 8GB)
Graphics Card
NVIDIA® GeForce® RTX 2060 - 6.0GB GDDR6 Video RAM - DirectX® 12.1
1st M.2 SSD Drive
1TB PCS PCIe M.2 SSD (2000 MB/R, 1100 MB/W)
Memory Card Reader
Integrated Micro-SD Memory Card Reader
AC Adaptor
1 x 230W AC Adaptor
Power Cable
1 x 1 Metre UK Power Cable (Kettle Lead)
Battery
Nova Series Detachable 4 Cell Lithium Ion Battery
Thermal Paste
STANDARD THERMAL PASTE FOR SUFFICIENT COOLING
Sound Card
2 Channel High Def. Audio + SoundBlaster™ Cinema
Wireless/Wired Networking
GIGABIT LAN & WIRELESS INTEL® Wi-Fi 6 AX200 (2.4 Gbps) + BT 5.0
USB/Thunderbolt Options
1 x USB 3.2 PORT (Type C) + 2 x USB 3.2 PORTS + 1 x USB 2.0 PORT
Keyboard Language
15" NOVA SERIES UK KEYBOARD
Operating System
NO OPERATING SYSTEM REQUIRED
Operating System Language
United Kingdom - English Language
Windows Recovery Media
NO RECOVERY MEDIA REQUIRED
Office Software
FREE 30 Day Trial of Microsoft 365® (Operating System Required)
Anti-Virus
NO ANTI-VIRUS SOFTWARE
Browser
Google Chrome™
Keyboard & Mouse
INTEGRATED 2 BUTTON TOUCHPAD MOUSE
Webcam
INTEGRATED 1MP HD WEBCAM
Warranty
3 Year Silver Warranty (1 Year Collect & Return, 1 Year Parts, 3 Year Labour)
Delivery
STANDARD INSURED DELIVERY TO UK MAINLAND (MON-FRI)
Build Time
Standard Build - Approximately 6 to 8 working days
Welcome Book
PCSpecialist Welcome Book - United Kingdom & Republic of Ireland
 
MisterCrow

MisterCrow

Active member
SpyderTracks said:
When you received it did you do a clean install or just license the test installation?
Click to expand...

Clean install. Have installed the drivers listed under the downloads section for my build, apart from the Nvidia drivers, as newer ones have since been available.
 
SpyderTracks

SpyderTracks

We love you Ukraine
AntBow said:
Clean install. Have installed the drivers listed under the downloads section for my build, apart from the Nvidia drivers, as newer ones have since been available.
Click to expand...
That may be the issue, the drivers in your download section will be outdated.

I would do a clean install again. Let windows update find all drivers except nvidia and clevo control center which you need to get from clevo directly.

What’s the chassis number? Should be on a label on the underside of the laptop.
 
MisterCrow

MisterCrow

Active member
Chassis is NH55ADY.

Where's the link for Clevo control centre? I couldn't find this online, so I installed it from the download section (like you say is probably old).

I had to install some drivers that Windows couldn't find - the "airplane" driver and the soundblaster driver software. Others I installed from the download section (even though I didn't necessarily need to). Will give your suggestion a go.
 
ubuysa

ubuysa

The BSOD Doctor
If you have a dump from the BSOD and you'd care to upload it to the cloud and post a link I'll take a look. Just because the BSOD says kbdclass.sys that doesn't guarantee this was the failing driver. :)

Also...what antimalware tools are you using? Anything apart from Windows Defender and Windows Firewall?
 
MisterCrow

MisterCrow

Active member
Thanks, have uploaded the memory.dmp here.

I'm not using any third party AV or firewalls, just the default Windows built-in ones.
 
ubuysa

ubuysa

The BSOD Doctor
Ok....the process in control at the time of the BSOD was HuntGame.exe - I don't know what that is but it seems game related.

There are two drivers that have problems in the dump, the most serious (and most likely cause of the BSOD) is nvlddmkm.sys shown here...

Code: 
ffffd109`6de6c6b8  fffff806`6a127709 Unable to load image
\SystemRoot\System32\DriverStore\FileRepository\nvcvi.inf_amd64_4fec5c05dfc4819c\nvlddmkm.sys, Win32 error 0n2

...that is the Nvidia graphics driver of course, so that's where I'd start. Use DDU to uninstall all previous driver versions and then install the latest version downloaded from the Nvidia website.

The other failing driver is netwtw10.sys shown here....

Code: 
ffffd109`6de6d5a8  fffff806`67f5ba97 Unable to load image \SystemRoot\System32\drivers\Netwtw10.sys, Win32 error 0n2
Netwtw10+0x44ba97

...that is a component of the Intel PRO/Set WiFi driver package, so I'd also install the Intel Driver Support Assistant and check whether there are driver upgrades for your wireless card. Experience has taught me to only ever install the driver itself and not anything else from the PRO/set package - I've encountered problems with this junk software before.
 
MisterCrow

MisterCrow

Active member
Thanks. Huntgame.exe is a game - Hunt: Showdown, I was playing this when the crash happened.

Have reinstalled the Nvidia driver as suggested, and checked my wireless drivers using the tool you suggested. It says it's up-to-date.I agree, I never install all the other junk, just the driver.

We'll see how I go now. It's only happened once, but I've not had the laptop very long. Be easier to diagnose if it happened more frequently!

Thanks for your help
 
D

demon28

Bronze Level Poster
I got the exact error a while ago while playing Overwatch. I think I updated my drivers since then and I havent had that BSOD for a couple of weeks now. Do you have automatic driver installation turned on?

Just for context I have exaucly the same laptop Nova with 3600 & RTX 2070
 
MisterCrow

MisterCrow

Active member
demon28 said:
I got the exact error a while ago while playing Overwatch. I think I updated my drivers since then and I havent had that BSOD for a couple of weeks now. Do you have automatic driver installation turned on?

Just for context I have exaucly the same laptop Nova with 3600 & RTX 2070
Click to expand...

Yeah, but manual installation. Yeah, have the latest drivers installed.

Have played for about 4 hours straight without issue so far.
 
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