0x800705AAThe code does not automatically mean you need to buy RAM or that memory is faulty. First check simultaneous app use and whether the camera works after restarting.
Windows camera error 0x800705AA
There are insufficient system resources to run the camera. Close apps you do not need and test Camera on its own.
Try this first
1 quick checks · ~4 min
Step-by-step solutions
Close applications you do not need
Save documents and finish calls or recordings first.
Close resource-heavy apps or apps using the camera normally. Do not end unfamiliar system processes.
Open only Windows Camera and test. If it works, close it before returning to the original app and check whether opening other apps brings the error back.
Restart and test before changing hardware
A restart lets you check behavior without accumulated app activity.
Save work, restart Windows normally and test Camera before opening other apps.
If it still fails, check available Windows and app updates. Do not install memory cleaners or buy components based only on this code.
Still not working?
If it persists with Camera alone after restarting, contact Microsoft or the manufacturer with the Windows version and affected app. If only one app fails, also check its support.
Sources
Documentation behind this guide. Editorial recommendations are identified separately.
Source review: . A documentation review, not a physical hardware test.