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CPU usage at 100% - mysqld

Ok, first of, let me say I am new here and am not any more tech-savvy than the average user...

I have a Dell Inspiron 1545 running Windows Vista

Recently, some program was eating up 100% of the CPU usage, causing my computer to be unbearably slow. In the processes tab of the task manager, no program was above 02-03 under the CPU column. After googling and attempting to research what was wrong, I ended up clicking on "show processes from all users". Sure enough something along the lines of mysqld.exe was constantly at about 98 CPU (SYSTEM was running this program). I was able to end the process and life as I know it went back to normal. It happened once more since then, but I knew how to take care of the problem (This was only happening upon restart of my computer from being shut-down. I had no problems when my computer was on sleep or hibernate).

Yesterday, however, my adapter was knocked out and my battery ended up dying. I plugged it in, turned it back on and same CPU usage problem. This time though, when I click show processes from all users, nothing comes up. Usually there would be a pop-up stating that a program needed permission...once I click okay processes would show up from SYSTEM. This time, no go. No screen comes up asking for permission and I never get to see what is eating up the CPU usage (although I am guessing it is mysqld again).

Any help at all appreciated, and again, I am not overly tech-savvy. Thank you in advance!

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I would also like to add that I have read it could be malware masking itself as mysqld.exe, but I ran malwarebytes and my virus protection program and nothing came up.

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You didn't say.

Why your machine has MySql installed. If you don't use that app, I'd uninstall it.

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