Monthly
A Windows virus scan is not performed automatically if one does not configure it to scan a Windows computer automatically. An antivirus is protecting you automatically from opening a infected file.
Yes, they are often launched automatically when Windows detects a problem.
By default, Windows automatically defragments magnetic hard drives once a week. The system schedules this task to optimize disk performance by rearranging fragmented data for more efficient access. Users can adjust the schedule or manually initiate defragmentation through the Disk Defragmenter tool in Windows. SSDs, however, are not defragmented as frequently, as they use a different optimization method called TRIM.
"Default" refers to a pre-selected option that is automatically chosen if no alternative is specified. It is often used in technology settings, such as default settings in software or default options in online forms.
Do you mean "System restore" By default: System restore automatically create a restore point when an Autoupdate installation is performed. Or when you install/uninstall a program with a installer that is System restore compliant. If you want it to create a restore point at regular intervals, you have to manually configure it.
As frequently as Windows does on a PC.
Every day, if you have not changed the default
Windows explorer automatically updates whenever Windows has a critical update. Computers should have Windows update activated to ensure a smooth update experience.
It shouldn't be necessary to defragment more than once a month, unless you are adding a lot more files, etc. to your computer. If you notice it begin to go more slowly, that is sometimes an indication you may need to defragment more often.
When a system restore point is created. Actually the Windows Registry is backed up daily if System Protection is turned on.
It doesn't - unless you've set a schedule. The 'default' is Wednesday mornings at 1am - which is pointless because the computer cannot defrag the drive while it's switched off ! You would normally set the defrag program to run at a specific time and day which suits your needs. You can set it to run daily, weekly or monthly at whatever time is suitable to you.
You should defragment your drive at least once a month to keep it running smooth and clear out unneeded items.