If you think your computer has a virus, the most important thing is to act quickly and avoid making it worse. As Computer Mechanics, we've provided computer virus and malware removal for Perth homes and businesses since 1997 — often same-day. This guide covers how to tell if you're infected, what to do right now, and how professional virus removal actually works.
What are the signs your computer has a virus?
Common warning signs of a virus or malware infection include:
Your computer suddenly runs slowly, freezes, or crashes often
Pop-ups and ads appear, even when you're not browsing
Your browser home page or search engine changed on its own
Programs open or close by themselves, or new toolbars/apps appear
Files are missing, renamed, or you're locked out (a sign of ransomware)
Friends or colleagues receive spam emails or messages from you
Your antivirus is disabled and won't turn back on
The computer is unusually hot or the fan runs constantly while idle
One or two of these can have innocent causes — but several together strongly suggest an infection.
What should I do right now if I'm infected?
Disconnect from the internet (unplug the network cable or turn off Wi-Fi) to stop data being stolen or the malware spreading.
Don't pay any ransom or call the "support" number in a pop-up — those are scams designed to take more money or access.
Don't rush to wipe or reinstall if you have important files — you may lose recoverable data, and a reinstall alone doesn't always remove account-level compromise.
Stop using the device for banking or passwords until it's cleaned.
Get it checked by a professional — especially if it's a work computer or holds important data.
Should I remove a virus myself or get a professional?
For a simple adware pop-up, a reputable malware scanner may be enough. But you should get professional virus removal if: important data is at risk, it's a business computer, you've been locked out (ransomware), banking or passwords may be exposed, or the infection keeps coming back after you "remove" it. Modern malware often hides deep in the system and re-installs itself — DIY tools frequently miss it.
How does professional virus removal work?
Our process is thorough, not just a quick scan:
Isolate and assess — we contain the device and identify exactly what's infected.
Back up your data where possible before making changes.
Remove the malware with specialist tools, clearing hidden and persistent infections DIY scanners miss.
Secure your accounts — because if credentials were stolen, cleaning the device isn't enough (a step most people miss). We reset passwords, re-enable MFA and review account access.
Verify and harden — confirm the machine is clean, update the operating system and software, and close the gap that let the infection in.
A virus on a work computer is more serious
On a business computer, a single infection can spread across your network, reach shared files, and lead to a data breach — with real legal and financial consequences. That's why we treat business infections as security incidents, not just clean-ups, and connect them to proper cyber security services for Perth businesses.
How do I prevent the next infection?
Keep Windows, macOS and all software updated (patched systems block most attacks)
Use managed endpoint protection, not just free antivirus
Turn on multi-factor authentication everywhere
Back up your data regularly and test the backups
Train staff to spot phishing — the most common way malware gets in
For Perth businesses, we bundle all of this into managed IT and cyber security so infections are prevented, not just repaired.
Get your computer checked in Perth
If your computer is behaving strangely, don't wait for it to get worse. Contact our Perth team or call (08) 9325 1196 — as Computer Mechanics, we've been removing viruses and rescuing data for Perth homes and businesses since 1997.
In short: if you suspect a virus, disconnect from the internet, don't pay any ransom or call pop-up "support" numbers, and get the device professionally checked — especially a work computer. Proper removal cleans the malware and secures your accounts, then closes the gap that let it in.
