Reinstall the Intel motherboard chipset drivers and see if that helps.

Unfortunately Microsoft continues to drop support for older hardware in later releases of Win 10.  The cam may be a victim of loss of support.  

Here is a workaround for webcam problems--

https://www.dell.com/support/article/en-us/sln85507/using-troubleshooting-and-resolving-driver-issues-on-your-dell-webcam?lang=en

https://www.dell.com/support/home/en-us/product-support/product/inspiron-one-23-2330-aio/drivers

https://www.dell.com/support/home/en-us/drivers/driversdetails?driverid=225mk&oscode=wt64a&productcode=inspiron-one-23-2330-aio

https://dl.dell.com/FOLDER01681282M/1/2330_Chipset_Driver_225MK_WN_9.4.0.1026_A00.EXE

https://dl.dell.com/app/DellWebcamSW.exe

https://dl.dell.com/FOLDER06540330M/1/Intel-Graphics-User-Interface-Application_N0GND_WIN64_1.100.2765.0_A08.EXE

https://dl.dell.com/FOLDER01674837M/3/AHCI_Intel_W814_A00_SETUP-KK7KD_ZPE.exe

https://dl.dell.com/FOLDER03136282M/1/2330_Audio_Driver_0H2TG_WN32_6.0.1.7544_A00.EXE

https://dl.dell.com/FOLDER01681196M/2/2330_Chipset_Driver_N8K81_WN_9.5.13.1706_A00.EXE

Try updating to latest BIOS----after Flashing, the camera should work fine. I've used this several times.

https://www.dell.com/support/kbdoc/en-us/000124211/dell-bios-updates

After tearing my hair out with some Optiplex systems where the cam would sometimes work and sometimes not, I found a posting that said to uninstall Skype. That fixed it!