While you consider the information I've provided below, in the meantime, I'll ask other members of the team if they see anything I've missed or have any additional suggestions.
Edit Note: Already a question from a staff member: Please explain whether you are referring to the computer being slow in general is slow or if it is only when browsing the internet. For example, is it slow opening other programs or opening screens like control panel or printers, etc?
How old is the computer? Has the dust been cleaned from it recently? That could be causing overheating and resulting in the computer shutting down. Although an old document, this was preserved from the retired Microsoft at Home website: Tidbits: How to clean your computer.
Also, you may want to run Speed SpeedFan to check the temperatures, etc.
SpeedFan is available from Download SpeedFan - Access temperature sensor in your computer and the current version is SpeedFan 4.51. Although the image below is for an older version, you will find the download link for 4.51 similarly as shown:
Install SpeedFan 4.510 and launch it from the desktop link. Do not make any changes to any of the settings. After you launch SpeedFan, leave your computer alone for a few minutes so that it is idle. You will see a screen like below. Either note down all the information in the second box (that has the temperatures) or save a screen copy and post a link to the image.
After a few minutes, go and do something on the computer. For example browse the Internet so that the CPU starts to work again. As you are doing this, keep an eye on the temperatures. Write down the temperatures while you are working on the computer. Please post both sets of information.
Also in SpeedFan, click the 'S.M.A.R.T' tab. Click the dropdown menu and select your main hard drive (C:). Hit the button that says 'Perform in-depth online analysis of this hard disk'. On the page that opens, look for something similar to this:
If you decide to run SpeedFan, post the results for us to see.
Edit Note: Already a question from a staff member: Please explain whether you are referring to the computer being slow in general is slow or if it is only when browsing the internet. For example, is it slow opening other programs or opening screens like control panel or printers, etc?
How old is the computer? Has the dust been cleaned from it recently? That could be causing overheating and resulting in the computer shutting down. Although an old document, this was preserved from the retired Microsoft at Home website: Tidbits: How to clean your computer.
Also, you may want to run Speed SpeedFan to check the temperatures, etc.
SpeedFan is available from Download SpeedFan - Access temperature sensor in your computer and the current version is SpeedFan 4.51. Although the image below is for an older version, you will find the download link for 4.51 similarly as shown:
Install SpeedFan 4.510 and launch it from the desktop link. Do not make any changes to any of the settings. After you launch SpeedFan, leave your computer alone for a few minutes so that it is idle. You will see a screen like below. Either note down all the information in the second box (that has the temperatures) or save a screen copy and post a link to the image.
After a few minutes, go and do something on the computer. For example browse the Internet so that the CPU starts to work again. As you are doing this, keep an eye on the temperatures. Write down the temperatures while you are working on the computer. Please post both sets of information.
Also in SpeedFan, click the 'S.M.A.R.T' tab. Click the dropdown menu and select your main hard drive (C:). Hit the button that says 'Perform in-depth online analysis of this hard disk'. On the page that opens, look for something similar to this:
The overall fitness for this drive is 93%.
The overall performance for this drive is 93%.
If you decide to run SpeedFan, post the results for us to see.
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