ENB TechnologiesLimited · RC 7714368

Viruses and pop-ups

Computer acting strange after a download

How do I know if I downloaded a virus?

Strange behaviour after a download usually means an unwanted program has installed itself.

It usually needs a technician, but it's rarely an emergency. The checks below are safe to try first.

Does this sound like yours?

  • Strange behaviour after a download

What usually causes it

  1. Unwanted program bundled with free software
  2. Trojan or spyware

Most likely first. A hands-on test confirms which one it is.

What you can safely check

  1. Run a full Windows Security (Defender) scan
  2. Check Task Manager for unknown programs using a lot of resources

Please don't

  • Don't type passwords or do online banking until it's sorted
  • Don't download 'fix my PC' tools from adverts

Not sure it's this? Check yours in a minute

If scans don't fix it, we do a thorough clean-up and secure your system. Our free repair checker asks a few quick questions about your laptop or desktop and tells you the most likely cause.

No diagnosis fee. Clear quote before any work. Visit us: Yaba, Lagos · Owerri · +234 902 730 1128

Want more detail? Read our guide: How to protect your business from ransomware.

Questions people ask

How do I know if I downloaded a virus?

Strange behaviour after a download usually means an unwanted program has installed itself. The most common causes are: unwanted program bundled with free software; Trojan or spyware.

What can I safely check myself?

Run a full Windows Security (Defender) scan. Check Task Manager for unknown programs using a lot of resources.

What should I avoid doing?

Don't type passwords or do online banking until it's sorted. Don't download 'fix my PC' tools from adverts.

Where can I get it fixed in Lagos or Owerri?

ENB Technologies repairs laptops and desktops at our offices in Yaba, Lagos and in Owerri, Imo State. There's no diagnosis fee, you get a clear quote before any work, and most common repairs are done the same day. Call or WhatsApp +234 902 730 1128.

Written by the ENB Technologies repair team from the faults we see on the bench every week.

ENB TECHNOLOGIES LIMITED (RC 7714368) repairs laptops and desktops in Yaba, Lagos and Owerri. This page is general information, not a diagnosis of your device. Please don't open your device or try hardware repairs yourself.

Want it looked at properly?

Bring it to our Lagos or Owerri office. No diagnosis fee, and you'll know the price before we start.

Monday to Friday: 8:00am – 6:00pmSaturday: 9:00am – 4:00pm Yaba, LagosOwerri info@enbtechnologies.com