I had a significant problem with CPU load spiking suddenly to 100 percent. This causes heat overload and is extremely bad for the CPU. It will eventually break, which will cost money.
The problem is a set of malware that lives in the OLC folder. You will find it here:
You will need to show hidden folders to see AppData.
To check your problem and fix it, follow the following steps:
1. Ctrl+Alt+Delete to open Task Manager. Select the "Processes" tab.
2. Look for cpumd.exe *32. This is the puppy that does the evil. Right click on the item inside the Task Manager list. Ask to open the location of the file.
3. You will be denied access. Ignore that, and note that file path (see above).
4. To verify that this is the culprit, download Core Temp, and fantastic little program that shows what the cores are doing, and how hot they are getting. It's free and easy to install. cpumd.exe will not start up straight away after booting, but will begin its nasty work within a few minutes. As it starts up, you will see it climb to the top of the CPU usage list in Task Manager, and you will also note the massive spike in CPU usage and temp in Core Temp.
5. End the cpumd.exe process. Your usage and temp will return to normal.
6. Go to the OLC folder that contains it, and delete it.
7. You also need to delete the whole folder, or the other files in it will recreate the cpumd.exe file, and the virus is back in business. The other files are also exe programs, and as they will be running, you will be unable to delete them. To get it done, look in the task manager for the same names as the files in the OLC folder, and end each one. Then delete. Repeat until all are gone.
8. Delete the OLC folder once it is empty. You do not need it, and will know if the problem has returned because it will reappear. So far, this has not happened for me, and my computer is now functioning normally.
9. Keep an eye out for news about the people who wrote this virus.
Hope this helps. Fly safe.