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Top IT Support Commands to Fix PCs, Printers & Scanners Fast

My Real IT Support Story: The Simple Commands That Save My Day (and Yours Too!)

IT Support Commands are the secret weapon every technician, office worker, and even home user should have up their sleeve. In today’s digital world, computers freeze, printers jam, and network connections fail at the worst possible moments — but the right troubleshooting commands can turn a mini-crisis into a quick, satisfying fix.

From checking your network settings when the Wi-Fi disappears, to fixing a stuck Windows update, to clearing out a printer queue that refuses to budge — these simple yet powerful commands help you handle common PC problems, laptop slowdowns, and printer or scanner errors without panic or wasted time.

In this guide, I’ll share my real-life experience using these troubleshooting tools every day as an IT Support Specialist. You’ll see exactly when and how to run each command, what results to expect, and simple snapshots that show you what’s happening behind the scenes — so you can fix issues like a pro, even if you’re not a tech wizard (yet!).

Whether you want to solve your own computer headaches, help your coworkers, or build confidence as an aspiring IT professional — these IT Support Commands will save your day again and again. Let’s dive in and make frustrating tech problems a thing of the past!

Want all these IT Support Commands in one place? Don’t worry — I’ve included the download link for you at the end of this guide!

Read also: 5 Best Solutions to Increase Laptop Speed Easily




The ‘No Internet’ Panic — ipconfig to the Rescue

One Monday morning, I got a call: “Hey, my laptop says it’s connected, but I can’t open any websites.”
Classic.
So I do what every IT support person does first — I open Command Prompt and type:

ipconfig

Boom — I check the IP address. If I see 169.x.x.x — that means the laptop failed to get an address from the router. 9 times out of 10, it’s a simple router reboot.

If your computer or laptop is connected with the local internet/Wi-Fi but now opening site or showing no internet connection status, then run command ipconfig /flushdns and restart your machine.

Takeaway: Next time your Wi-Fi is being dramatic, try ipconfig. It tells you if your laptop is even talking to the router.
Bonus: ipconfig /release + ipconfig /renew can refresh that connection without rebooting the whole PC.

Read also: 5 Best Solutions to Fix Your Computer Slow Speed

Note: Run all these commands as “Administrator” or use a privilege account. See the below screenshots.


Can’t Open Google? — ping to Check if It’s You or the Internet

People blame their computers for “not working,” but half the time it’s a bad DNS or a hiccup outside.
So I type:

ping google.com

If it says “Request timed out”? Yep, you have no connection. If it replies, the problem’s probably DNS — so ipconfig /flushdns often saves the day.

It’s a bit like shouting into the void: “Hey Google, can you hear me?” — and Google says “Yep, I’m here.”


The Slow Computer Mystery — tasklist + taskkill

I once had a user who said, “My laptop is slower than my grandma’s old typewriter!”
So, I run:

tasklist

This shows every program running — including the sneaky ones hogging memory.
If I see Chrome.exe with 12 tabs stuck, I’ll taskkill it like this:

taskkill /im chrome.exe /f

Next thing you know, the laptop breathes again — and my user thinks I’m a wizard.


Windows Acting Weird? — sfc /scannow to Fix Corrupt Files and Fix Slow PCs

Random crashes.
Apps that open… then close.
Updates that never finish.

I always trust sfc /scannow. One time, a finance manager’s laptop kept crashing right before payroll. This command scanned Windows system files and fixed hidden corruption. Payroll was saved. The finance team bought me coffee for a week.


The Office Printer that Refused to Print — Restarting the Print Spooler

Ever sent a document to the printer and… nothing?
The printer says “Ready” but the job is stuck.

Secret fix: Restart the Print Spooler — the little Windows service that handles all print jobs.

In Command Prompt:

net stop spooler
net start spooler

I once saved a team’s entire presentation printout with this trick — they were about to buy a whole new printer!

Alternative method:

Follow these two simple steps to run the windows services management console and printer spooler service to fix printer issues.

Step 1:

Step 2:


Scanner Not Detected? — Restart WIA

Scanners are moody. Sometimes Windows forgets they exist.
I fix this by restarting Windows Image Acquisition (WIA):

  • Open services.msc
  • Find Windows Image Acquisition (WIA)
  • Right-click > Restart

Suddenly, the scanner reappears — no driver reinstall needed.


Laptop Won’t Sync with Company Apps? — dsregcmd /status + Start-DeviceSync

These days, many work laptops are joined to Azure AD and managed by Intune.
If a device won’t pull new apps or settings, I check:

dsregcmd /status

This tells me if the laptop is still connected to our domain. If not — that’s the issue.
Then I force a sync:

Start-DeviceSync

Voila — apps magically appear in the Company Portal again.


Group Policies Playing Hide & Seek — gpupdate /force

If you ever wonder why your shared drives or printers don’t appear at work — they might be stuck waiting for the next Group Policy update.

Running this fixes it fast:

gpupdate /force


Hard Drive Worries? — chkdsk to Spot Bad Sectors

One user told me her laptop made a “click-click” sound — not good.
Before panicking, I checked the disk:

chkdsk C: /f

This checks for bad sectors — and sometimes repairs small issues before they turn serious.
Always back up first!


Who Am I Even Logged in As? — whoami

Sometimes people can’t access their files and they swear they’re on the right account.
One quick:

whoami

and we see the truth. Wrong profile, mystery solved.


Every Command, A Story

Every time I use these, I take snapshots — for my notes, for proof, or to train junior techs.
Sometimes I even send them to users so they can see what I did — no secrets, no magic, just a few words typed into a black box.


Final Words: Be the Hero, Even for Yourself

People think IT support is fancy software or expensive tools — but honestly, 80% of my daily wins come from these small, mighty commands.

Next time your PC freezes, printer jams, or Wi-Fi ghosted you — don’t panic.
Open Command Prompt. Type one line.
And maybe, just maybe, you’ll fix it yourself — and feel like a wizard too.


Did You Find This Useful?

Save this list. Share it with a friend.
Or better yet — print it (when the printer works, of course).

FAQs for IT Support Commands

What are basic IT Support Commands everyone should know?

Some basic IT Support Commands include ipconfig to check network settings, ping to test internet connectivity, sfc /scannow to repair Windows files, tasklist to view running programs, and taskkill to force-close unresponsive apps.

How can I fix my printer if it’s stuck on printing?

You can clear a stuck printer queue by restarting the Print Spooler service. Use net stop spooler and net start spooler in Command Prompt, or restart the Print Spooler in Windows Services.

How do I fix a slow laptop with commands?

You can use tasklist to find resource-hogging processes, taskkill to close frozen apps, sfc /scannow to repair system files, and chkdsk to check your hard drive for errors.

Why is ipconfig /flushdns useful?

ipconfig /flushdns clears your DNS cache. It’s useful when websites don’t load correctly, or when a site’s IP address has changed but your PC keeps using an old one.

Can I use these IT Support Commands without being an expert?

Yes! These commands are safe and simple when used correctly. They’re designed to help you troubleshoot common PC, laptop, printer, and network problems quickly.

How can I fix my laptop that won’t sync with company apps?

Run dsregcmd /status to check if your device is properly joined to Azure AD, then Start-DeviceSync to force a sync for missing apps or settings in Intune.

Is it safe to run sfc /scannow?

Yes. sfc /scannow is a built-in Windows tool that checks and repairs corrupted system files. It doesn’t delete personal data or harm your files.

Where can I find more IT Support tips?

Visit DriveInTech for practical guides, troubleshooting tips, and easy solutions for common IT issues.


Israr Ahmed
Israr Ahmed

Israr Ahmed is the founder of DriveInTech and a technology professional with over 17 years of hands-on experience in IT support, system administration, and digital solutions.

Through his blog and YouTube channel, he shares practical guides, troubleshooting tips, and digital growth strategies to help individuals and small businesses solve tech problems and stay ahead in the digital world.

When not writing or creating tutorials, Israr enjoys exploring new software tools, testing online learning platforms, and sharing insights that make technology simple, useful, and accessible for everyone.

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