yacsui.dll:

yacsui.dll, C:\WINDOWS\system32, C:\Windows\SysWOW64\ Microsoft Dynamic-link library

yacsui.dll ?

2. CMD
3. : regsvr32 yacsui.dll Enter

RegSvr32.exe :

Regsvr32 [/u] [/n] [/i[:cmdline]] yacsui.dll

/n -  /i
/s – 
/u - 
/i -  [cmdline];  /u, 

Snappy Driver Installer

:

:

yaz.dll ylog.dll yt.dll yb_key.dll yacsui.dll ybpcemve.dll yui.dll YHTTP.dll YML.dll yjpagent.dll Yahoo.dll yk51x86.dll yk62x86.dll yacscom.dll ymdm_audio.dll yk60x86.dll YImage.dll ygaxcc_y.dll yalertcenterm.dll y95ctxps.dll y1lnbqsu.dll ym11auth.dll yj4afmcb.dll yhrlo5dm.dll ycpfoundation.dll ygxtvna3.dll ygiz8khs.dll ymdm_video.dll yjyfgdgu.dll yjrpfsq2.dll