For Windows7,you need install kb4474419 and kb4490628 patch firstly,x64 Windows7 install x64 patch,x86 Windows7 install x86 patch,and restart computer,after that,you can install camera driver.
And this patch is only effective for Windows7 SP1,if you use Windows SP0,you need update it to SP1.
DownloadLink:https://www.qhyccd.com/file/repository/latestSoftAndDirver/other/Windows7Patch.zip