Call Of Duty; Multijoueur ne se lance pas;

Bonjour,


Depuis tout à l'heure, mon mode multijoueur de call of duty black ops ne se lance pas sur mon Pc.
Pourtant, encore hier, ça marchait très bien, en revanche, le mode solo se lance impeccablement, sans problème.

Lorsque j'essaye de lance le multijoueur, je n'accède même pas à l'écran principale, mais la console du jeu m'indique ceci :



----- Initializing Renderer ----
execing ragdoll.cfg from fastfile
Cmd_AddCommand: scrProfileInfo already defined
----- Client Initialization -----
----- Client Initialization Complete -----
Trying SMP acceleration...
Detected 4 cpus, using 2 worker threads.
...succeeded.
----- R_Init -----
Getting Direct3D 9 interface...
Pixel shader version is 3.0
Vertex shader version is 3.0
Attempting 1024 x 768 fullscreen with 32 bpp at 60 hz
Game window successfully created.
Using 4x anti-aliasing
Creating Direct3D device...
Com_TouchMemory: 0 msec. Using sum: 0
Adding fastfile 'fr_code_post_gfx_mp' to queue
Adding fastfile 'code_post_gfx_mp' to queue
WARNING: Could not find zone 'c:\program files (x86)\steam\steamapps\common\call of duty black ops\zone\french\fr_code_post_gfx_mp.ff'
Loading fastfile 'code_post_gfx_mp'
used 3.34 MB memory in DB alloc
Adding fastfile 'fr_patch_mp' to queue
Adding fastfile 'patch_mp' to queue
Using 1 GPU(s).
Initializing render targets...
Requested frame buffer to be 24-bit color with 8-bit alpha
DirectX returned a frame buffer that is 24-bit color with 8-bit alpha
INTZ format supported
Initializing static model cache...
Initializing dynamic buffers...
Initializing particle cloud buffer...
Creating Direct3D queries...
Setting initial state...
Loading fastfile 'fr_patch_mp'
used 0.00 MB memory in DB alloc
Loading fastfile 'patch_mp'
used 10.77 MB memory in DB alloc
Video memory for device: 1005 MB.
Rounded video memory size: 1024 MB.
DirectX reports 1024 MB of video memory and 2715 MB of available texture memory.
Using video memory size to cap used texture memory at 1008 MB.
Texture detail is set automatically.
Using picmip 0 on most textures, 0 on normal maps, and 0 on specular maps
Error: Could not load image "$g16r16".
Error: Could not load image "$r5g6b5".
Error: Could not load image "$blacktransparent".
Error: Could not load material "$floatz_donotremove".
Error: Could not load material "$processed_floatz_donotremove".
Error: Could not load material "$ps3_aadownsample_donotremove".
Error: Could not load material "particle_blend_donotremove".
Error: Could not load material "particle_zdownsample_donotremove".
Error: Could not load material "redact1".
Error: Could not load material "redact2".
Error: Could not load material "redact3".
Error: Could not load material "bloom_mip3_blur".
Error: Could not load material "$ps3_reload_zcull_donotremove".
Error: Could not load material "water_dynamic_spray".
Error: Could not load font "fonts/consoleFont".

====================================================
Com_ERROR: Could not load default asset 'fonts/consolefont' for asset type 'font'.
Tried to load asset 'fonts/consoleFont'.
Tried to load asset 'fonts/consoleFont'.
====================================================



Error during initialization:
Could not load default asset 'fonts/consolefont' for asset type 'font'.
Tried to load asset 'fonts/consoleFont'.






Voilà, je ne suis pas du tout doué en informatique, je demande votre aide, je ne sais pas quoi faire.

Merci d'avance :)