Question how do I fix a former non-lagging PC but is now lagging after the power was shut off?

[Acai Bowl]

The power was shut off while a game was playing and now anything that uses a lot of data or power lags when it formerly didn't. Restarts don't fix this issue. What happened and how do I fix it?

 

[rgd1101]

full system spec? include brand and model of the psu

 

[Acai Bowl]

full system spec? include brand and model of the psu

Device name DESKTOP-PTD0L52
Processor AMD Ryzen 5 2600 Six-Core Processor 3.40 GHz
Installed RAM 16.0 GB
Device ID 283A740A-FFB1-4E69-8227-BC95C961C75E
Product ID 00326-10060-73024-AA259
System type 64-bit operating system, x64-based processor
Pen and touch No pen or touch input is available for this display

I believe its Ryzen brand not sure of the model