videos sound only without using win10 default player

i have installed K-Lite Codec Pack ,updated to the latest win10,and adjusted with Codec Tweak Tool all reset.
but only win10 video player can play normally. other players including MPC-HC,have no image.
It has been a while but i cannot really bear the inconvenience of it now!
and my wallpaper engine cannot play video format as well,sounds only.
wish anyone would know sth about it. THX!

Re-install your sound driver.

Also check if the correct device ("speakers") is set as the default audio device. Classic Control Panel > Sound

Admin wrote:Re-install your sound driver.

Also check if the correct device ("speakers") is set as the default audio device. Classic Control Panel > Sound

there was a misguide in my topic,sorry about that ,should be corrected by now.
thank you for reply
Well the problem is with my image ,not sound,audio is good.
any idea?

Can you copy this information here:
Codec Tweak Tool > Generate Log

There is probably a problem with your graphics driver. Update that.

Codec Tweak Tool | Log file | Generated at 2018-07-25 09:38:48

##### System Information #####

OS: Windows 10 Enterprise (10.00.17134) (x64)
CPU name: Intel(R) Core(TM) i7-4700MQ CPU @ 2.40GHz
CPU speed: 2394 MHz (8t)
Memory: 8128 MB
Screen size: 1920x1080 (32bits) (60Hz)
Video card 1: Intel(R) HD Graphics 4600
VendorID: 8086, DeviceID: 0416
Video mem: 1024 MB
Video driver: igdumdim64.dll (Version 20.19.15.4963) (2-21-2018)
Video card 2: NVIDIA GeForce GTX 760M
VendorID: 10de, DeviceID: 11e3, SubSys: 1059152d
Video mem: 2048 MB
Video driver: nvldumdx.dll (Version 24.21.13.9836) (6-24-2018) (NV 398.36)
Audio device: NVIDIA Virtual Audio Device (Wave Extensible) (WDM)
VendorID: 0955, DeviceID: 9000
Audio driver: nvvad64v.sys (Version 4.8.3.0) (6-5-2018)

##### K-Lite Codec Pack #####

KLCP version: 14.3.0
KLCP type: standard

Speaker conf: 2.0

MPC renderer: EVR CP
MPC subs: ISR

##### Decoder Settings #####

LAV Video:
H264=1 HEVC=1 VP9=1 VC1=1 MPEG2=1 MPEG4=1 WMV3=0

LAV Audio:
MP3=1 AC3=1 DTS=1 DTSHD=1 EAC3=1 TRUEHD=1 AAC=1 Vorbis=1 LPCM=1 WMA=0

##### DirectShow Filters (32-bit) #####

Description: PlayLaterVideoSplitter Filter
File name: c:\program files (x86)\common files\ffdshowex\plvfilter.dll
File version: 4.3.1.0
File size: 555520 bytes
File MD5: a2d35620cfd7277be2510d6f5214935c
CLSID: {2484C7A7-7145-4E67-A322-0CCBA4D97638}
Merit: 00600000 = MERIT_NORMAL

Description: PlayLaterVideoSource Filter
File name: c:\program files (x86)\common files\ffdshowex\plvfilter.dll
File version: 4.3.1.0
File size: 555520 bytes
File MD5: a2d35620cfd7277be2510d6f5214935c
CLSID: {49086FDF-36D8-4173-8603-FD30E4D63423}
Merit: 00600000 = MERIT_NORMAL

(A total of 73 filters, 2 shown, 71 hidden)

##### DirectShow Filters (64-bit) #####

(A total of 69 filters, 0 shown, 69 hidden)

##### ICM Class Manager (32-bit) #####

(A total of 2 filters, 0 shown, 2 hidden)

##### ICM Class Manager (64-bit) #####

(A total of 2 filters, 0 shown, 2 hidden)

##### Default source filters (32-bit) #####

.plv {49086FDF-36D8-4173-8603-FD30E4D63423} PlayLaterVideoSource Filter

(A total of 56 default source filters, 1 shown, 55 hidden)

##### Default source filters (64-bit) #####

(A total of 55 default source filters, 0 shown, 55 hidden)

##### ACM and VFW Codecs (32-bit) #####

(A total of 16 codecs, 0 shown, 16 hidden)

##### ACM and VFW Codecs (64-bit) #####

(A total of 15 codecs, 0 shown, 15 hidden)

##### DirectX Media Objects (32-bit) #####

Description: XnaVisualizerDmo
File name: c:\program files (x86)\common files\microsoft shared\xna\framework\shared\xnavisualizer.dll
File version: 4.0.30901.0
File size: 47368 bytes
File MD5: 06569711cc1044c52af68b5c1b2fc29a
CLSID: {a8122ff4-9e52-4374-b3d9-b4063e77109d}

(A total of 32 DMO, 1 shown, 31 hidden)

##### DirectX Media Objects (64-bit) #####

(A total of 31 DMO, 0 shown, 31 hidden)

I have just updated my intel 4600 drivers but it didn't help..
meanwhile my nvidia drivers are always updated.
I think it's caused by sth else

I somehow used another player from win10 store, called ACG player.
and that works fine as well as win10 media player,
wonder if this info helps

I see you have an Optimus system (Intel + NVIDIA). Those often have weird problems when the drivers don't work well together.

In the NVIDIA control panel you can choose which GPU should be used by default, Intel or NVIDIA. Changing that may fix the problem.

I manually disabled my nVidia GTX760M from device manager， it seems like it was using the Intel graphic card already ，nothing changed.
If I choose to run with the nvidia card (since intel card cannot be disabled),it didn't help either。

Optimus works as follows: the NVIDIA driver decides per application if the NVIDIA GPU should be used, or if the work is passed directly to the Intel GPU. If the NVIDIA GPU is used, then its output is passed to the Intel GPU, which renders it on the screen. The Intel GPU can't be disabled, because the screen is connected to that.

You should not disable the NVIDIA GPU. You can configure when it should get used and when not.

My suggestion would be to re-install the NVIDIA driver. During installation there is an option to reset settings to defaults, enable that.