Windows 10: Getting lag & constant not responding

Windows 10ver21H1 OS Build 19043.1415I just recently uninstalled some unused program because of low disk space on C: and managed to increase 25-30ish GB.The next time I turned it on again, the laptop started to get laggy and constantly not responding after around one hour or so.Some picture saved in the C drive also can't be shown as a thumbnail. Opening it will give message that it's unsupported, but after a few second the image is loaded just fine. Moving the picture to D: drive also fixed the problem and the thumbnail is showing just fine.None of them happened before the day I uninstalled

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Constant script errors and slow loading pages in 10 internet explorer 11

I have done the steps listed above. They have not helped and I am still getting constant script errors, along with slow loading pages. Are there any other suggestions?

 

Getting lag & constant not responding

Okay, i tried the scannow and it seems to repair some corrupt file.
I will return later, for now, i'm going to see if there's any difference.

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Okay, seems like the lag is is fixed/reduced.
As for the not responding, I'm not really sure how to explain it.
It usually happen when I closed or started a program, without the lag they can close immediately, but some program still linger as background process for some minutes. I think the cause is the same, but the difference in lag caused different effect.

 

Random lag spikes

Hi,

We would like to know more about your lag issue:

• What browser are you using when you experience a lag?
• Does the lag occur in a particular game?

In the meantime, we suggest you run the System Maintenance troubleshooter. Here are the steps:

• Press Windows Key + X.
• Click on Control Panel.
• Select Troubleshooting.
• On the left pane, click on View All.
• Click on System Maintenance to run the troubleshooter.

Looking forward to your response.