Malware & Spyware: How They Slow Down Your Laptop — and How to Fix It (NW London)
- FirstAidPC
- Nov 20, 2025
- 1 min read
If your laptop suddenly feels slow, freezes, or acts strangely, malware is one of the most common causes we see at FirstAidPC — especially for customers in Camden, Swiss Cottage, Highgate, and Golders Green.
Malware doesn’t always show obvious signs. But it silently damages performance and puts your privacy at risk.
Here’s how it slows your system — and what you should do.
1. How Malware Slows Down Your Laptop
Malware typically causes:
Programs taking ages to open
Web pages loading slowly
Pop-ups appearing randomly
CPU usage spiking in Task Manager
High fan noise even at idle
Strange background processes
Spyware, in particular, constantly sends data over the internet — which slows everything down.
2. The Most Common Types We See in NW London
Adware
Shows pop-ups, injects ads, slows browsing.
Spyware
Tracks your activity and uses system resources.
Trojans
Hide inside fake downloads or email attachments.
Cryptominers
Secretly mine cryptocurrency → 100% CPU usage → laptop becomes unusable.
3. Quick DIY Fixes
A. Windows Defender Scan
Go to:Settings → Privacy & Security → Windows Security → Virus & Threat Protection → Quick Scan
B. Use Malwarebytes Free
Good at removing adware and browser hijackers.
C. Reset your browsers (Chrome/Edge/Firefox)
This removes hidden extensions causing slow speeds.
4. When to Visit FirstAidPC
If your laptop is still slow, or scans aren’t removing threats, you may have deeper malware embedded in:
Registry
Startup processes
System files
Hidden scheduled tasks
We offer:
✔ Full malware and virus removal✔ System optimisation✔ Browser reset✔ Protection setup✔ Same-day diagnostics
Serving Hampstead Heath, Camden, Finchley, Highgate, NW3, NW11, NW6, N6.##


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