If your computer can't handle the programs you are using it's hightime you upgraded the CPU. The developers upgrade the programs to make them more secure and implement new features in them, but the programs might also require more of your CPU than they used to do in the past.
Before you upgrade your computer, go to a computer store and tell them your computer's (motherboard's) model number (check out the don't know how to find my device's model number guide, if you were unable to find it) and they will tell you if your motherboard can support a newer CPU.
Note: Not all CPU's are the same, and supported by all the motherboards out there.
Maybe a program has become unresponsive or it didn't quit properly. Pressing the restart button is all you need to resolve this issue.
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