Answer:

1. Reboot

First step: save your work and restart your PC. “Turn it off and on again” is classic troubleshooting advice for a reason. This may resolve the issue, especially if it’s been a long time since you last restarted — a reboot can clear out temporary files and potentially resolve slowdown in long-running processes.

2. End or Restart Processes

Open the Task Manager (CTRL+SHIFT+ESCAPE). If a program has started climbing in CPU use again even after a restart, Task Manager provides one of the easiest methods for tracking it.

Note that full-screen programs like games will sometimes take focus away from the Task Manager (hiding it behind their own window). To prevent this, click “Options” in the top menu bar, then select “Always On Top”. If you have a SECOND monitor, you can also just drag the Task Manager window over there.

Once you’re in the Task Manager, click the Processes tab at the top. Click “More details” at the bottom of this tab to reveal background Windows processes. Look for the “CPU” column near the top of the Processes tab and click it to order by CPU usage:

Task manager

You can expect high CPU utilization when playing some games, running a video-editing or streaming application, performing an antivirus scan, or juggling many browser TABS. If you’re DEALING with this kind of everyday high-CPU usage situation, you should close all background programs and tabs you aren’t using, then return to Task Manager and see if the situation has changed.

It’s important to remember that high CPU usage while multitasking can be normal. Modern CPUs handle multitasking situations by splitting processes between multiple processor cores, which work through different sets of instructions simultaneously. Intel® Hyper-Threading Technology (Intel® HT Technology) takes it a step further, creating multiple “threads” of execution in each core, each of which handles different processes. If the CPU usage of a heavy-duty program like Adobe Premiere is high, it may just be efficiently using the CPU cores available to it.

Intel® Turbo Boost Technology can also help processing of heavy workloads by dynamically increasing the frequency of your CPU. Intel® Core™ X-series processor family have another tool to help avoid SLOWDOWNS, as their Intel® Turbo Boost Max Technology 3.0 automatically assigns the biggest tasks to your FASTEST processor cores, as well as boosting the frequency of those cores.

hope it helps....