As time goes, there are many issues on your box/laptop.
The slowdown of the computers speed may be the most common issue.
Here are some common phenomena that the laptop runs slow.
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It is very slow and unresponsive.
This post 13 Tips to Windows 10 Very Slow and Unresponsive can be helpfulto you.
It keeps freezing now and then.

Its extremely slow to start up.
you might refer to this post How to Fix Slow Startup Speed after Upgrading to Windows 10.
It runs hot quickly and overheats.

Then, you could read this post How to Fix Laptop Overheating and Rescue Your Data.
You may ask why is my Dell laptop Windows 10 brand new running so slow?
This issue can be due to several reasons.
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Step 1: Restart the computer regularly.
Step 2: spin up the automated tool provided in the Dell SupportAssist tool.
Step 3: Run a complete hardware diagnostic test.

What is Dell Optimizer?
How to download and install Dell Optimizer on Windows 11/10?
Refer to this post and you’ve got the option to know how to use it.
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After that, you could go to fix the Dell laptop running very slow Windows 10 issue.
The following is a simple guide is for you.
Then, you’re able to restart the PC to see if the issue has been fixed.

Viruses and malware can cause your Dell laptop to run slowly and some other serious problems.
you’ve got the option to use Windows Defender or Avast to check for the virus.
you’ve got the option to disable some heavy performance processes.

Here is how to do that:
Step 1: TypeTask Managerin theSearchbox to open it.
Step 2: Go to theStartuptab and sort the processes by their Startup impact rating.
Step 3: Then choose to deactivate the processes in theHighcategory.
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Step 4: Now, you’re gonna wanna click theDisablebutton.
After that, the Dell laptop running very slow Windows 10 issue should be fixed.
If not, try the next solutions.
Thus, you should clean up the hard drive, which can help your laptop get great performance.
Step 2: In the pop-up window, the system drive is selected by default.
you’re gonna wanna clickOKto continue.
Step 5: Now, you better clickDelete Filesto confirm that you want to permanently delete theses files.
Then, you have cleaned up the hard drive successfully.
verify if the Dell laptop running slow Windows 10 issue still exists.
What is Dell Update Utility?
How to download it for your Windows 10?
This post provides a detailed guide for you.
Keep on your reading.
The corrupted or fragmented hard drive can also cause this issue.
Thus, it’s crucial that you defrag the hard drive.
Here is how to do that:
Step 1: Typedefragin theSearchbox and chooseDefragment and Optimize Drives.
Step 2: Now, you’ve got the option to choose the desired drive and clickAnalyze.
Step 3: After scanning the drive, choose the fragmented drive and clickOptimize.
Step 4: Wait for the process to be completed.
More RAM will allow you to run multiple programs at once or run more high-demand programs quickly.
If your RAM is less than 4 GB, the upgrade will significantly improve the performance of your laptop.
Step 1: Power off your laptop and flip it down.
Step 2: Then, you should probably remove the laptop battery.
Step 3: Get a small star screwdriver and pop up the panel that you unscrew.
Step 4: Check your compatible RAM and plant the RAM in the slot.
Step 5: Cover the back panel and tight it with the screw.
Step 6: Power on your laptop.
Unlike traditional hard drives, SSDs dont have the moving parts, thus, they are faster.
To do that, there is a free tool for you MiniTool ShadowMaker.
Besides, it is a user-friendly program to protect your setup and data.
This software offers a Trial Edition that allows a 30-day free trial for all backup features.
If you want to use it permanently, get itsPro Edition.
Now it’s possible for you to download and try MiniTool ShadowMaker to back up your PC.
Now, lets see how to upgrade the system to a faster SSD.
Step 1: Connect the SSD to your system.
Launch MiniTool ShadowMaker, then clickKeep Trialand clickConnectinThis Computerto continue.
Step 2:After entering the main interface, navigate to theToolstab.
And then choose theClone Diskfeature to continue.
Step 3: Next, you are required to choose the source disk and the target disk for cloning.
The source disk is the system disk and the target disk is SSD.
Step 4: After you have successfully selected the disk clone source and destination, clickOKto continue.
you oughta remove or disconnect either of them.
What Is Dell Migrate?
How does Dell Migrate work?
How to use Dell Migrate?
What to do if Dell Migrate is down?
This post can provides answers.
This post helped me to fix the Dell laptop running slow Windows 10 issue.
If you also come across the same issue, you might try these tricks.
Besides, you’ve got the option to try MiniTool ShadowMaker to upgrade your system to SSD.