Hello,i have built a new computer for no more than 2 months now its pretty high end, ryzen 7 3700x rtx 2070 super etc... so sometimes when i boot my pc windows has a blank black screen with the loading circle and takes about 10-15 seconds to leave from that screen and actually take me to the login screen,any idea why? should i worry? or is it completly normal.. btw this happens sometimes, not every boot..
You likely have fast startup enabled. This can result in some pretty fast boot times. However, Windows can not update itself during a boot, when fast startup is enabled, so if Windows needs to load an update during a boot, it will disable fast startup to load the update files. After this is done, fast startup will be reenabled and will load it's current state into your RAM for the next boot. It should also be noted if Windows is not correctly shutdown, or you chose to do a restart, fast startup will also not be enabled, so your boot times will increase.