What is System idle process?

Just as the pictures below, In Windows NT operating systems, the System Idle Process contains one or more kernel threads which run when no other runnable thread can be scheduled on a CPU. In a multiprocessor system, there is one idle thread associated with each CPU core.

What causes system idle process cpu 99 error?

C drive is almost full
Too many programs are running at the same time.

Tips for Repairing system process 99

1. Reinstall the application which might bring system idle process virus errors.

2. Check your windows update. Please watch the video below:

3. Download and install the latest drivers for your computer.

To update the drivers automatically, all you need to do is right-click Computer and choose Manage.

And then click Device Manage. Check carefully and see if there is a yellow exclamatory mark. Double click it and click update drivers.

4. Execute the sfc /scannow command.

System File Checker is a utility in Windows that allows users to scan for corruptions in Windows system files and restore corrupted files. All you need to do is just click Start--Type CMD in the searching box--type sfc /scannow and click enter.

5. If the above 4 steps doesn't work, you had better do a system restore for your computer.

Win 8 Restore:

a.From the Windows 8 Start screen, type "Restore." The top result in the right-side Search panel should be "Create a restore point." Even though that's not what we're doing today, that's the choice you want to make. It opens the Control Panel to the Systems Properties dialog's System Protection tab
b. Tap the first button on that property sheet: System Restore. This opens a wizard-like dialog, the first page of which says "Restore system files and settings" Here you get another chance to see which programs will be lost and gained. Tap "Next."
c.you'll see a dialog with a choice of system restore points.

Win 7/vista Restore:

Please refer to this page for help:

Is it time for a PC checkup?

PC runs best when they receive regular, professional maintenance. The installation and un-installation of software, hardware, and drivers often leave remnants behind in your registry, resulting in a tangle of unused applications, broken drivers, and incomplete and empty command signals. This mass of confusion slows down your computer and if not addressed promptly can lead to terrible problems such as computer freezing, programs not responding, and system crashes. As a distinguished PC optimizer, SmartPCFixer is obviously the best solution for people to eliminate system idle process too high issues. Apart from solving system idle process high cpu usage errors, this software also maintains very helpful function for its users.

Please Note:The Windows Registry will be scanned and repaired by SmartPCFixer. This application
will remove damaged registry entries and repair the windows registry. The scan and repair process will take approximately 2 minutes.

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