Question Why does my CPU usage drop to 0 every couple seconds while gaming?

[damnregasm]

I own and Acer Aspire E5-773G and while I am playing LoL I get frequent frame drops that make both my frames and CPU usage drop to 0. These frame drops last for about 2 seconds and it's is seriously bothering me. This started happening AFTER I did an sfc scan to fix other problems.

 

[shknawe]

Sfc scan and repair only deal with the start up and shut down of windows. So I don't think you affected the fps doing this. What are your system specs to include cpu, gpu, motherboard, psu, memory, drive, os. cooling. TY.

 

[damnregasm]

CPU: Intel® Core™ i5-6200U processor Dual-core 2.30 GHz
Integrated GPU: Intel HD Graphics 520 (Skylake-U GT2)
Second GPU: NVIDIA GeForce 920M
Motherboard: Acer Aspire E5-773G or 446012B4-3944-F147-AFA0-BF94D66F5DFF
PSU: How do I check?
Memory Modules: SK Hynix HMT45156BFR8A-PB & Kingston ACR16D3L51KNG/8G
Drive: WDC WD10JPVX-22JC3T0
OS: Windows 10
Cooling: Not sure how you check this either

My laptop is actually the Acer Refurbished Aspire E5-773G-5273
I might have typed some of these wrong, but I hope that it wont matter TOO much

 

[Karadjgne]

You used sfcscan to fix other problems. Sfcscan replaces/repairs Windows system files. So your issue is still related to the prior problem. Sfcscan only repaired whatever system files were damaged, but not any other files.

Going to need to know what the prior issue was.

 

[damnregasm]

The issue I was trying to fix? It was a black command prompt like box. and its: Select C:\Windows\Microsoft.NET\Framework\v.2.0.50727\regasm.exe
I am now on my phone as my computer just crashed.