Windows 7: system doesn't detect antivirus

ok i run windows 7 home premium and when i go to the detection screen it say's i do not have a antivirus installed is there a way to enable it through a setting or something this is also being detected through hp advisor. i got this laptop last year it's a hp g61 series just wondering if anyone know's how to fix this issue?

You need to install antivirus software.

In short, what theog said. You need an anti-virus.

avast! is very good, apparently. Although I've never used it myself, I hear it's quite good.

AVG Anti-Virus Free Edition 2011 - Free software downloads and software reviews - CNET Downloads
avast! Free Antivirus - Download Software for Virus Protection

I do not recommend using AVG, AVG will add data to the Recovery Partition, making Recovery unusable.

Hi,

I agree with Og : AVG really isn't recommended much these days.

Consider avast or Microsoft's own MSE - both will suit you just fine.

Regards,
Golden

One more opinion. You say you got your computer last year. I'm guessing you've been running without any kind of antivirus for all this time. (Windows Defender, an antispyware, should have been turned on by default with Windows 7.) For the time being, I'd recommend using the free Microsoft Security Essentials (MSE). It's made by the same folks who make Windows 7 so there should be no compatibility issues other than you must be using genuine Windows 7. Install it, update it, then run a full scan to make sure you haven't picked up some malware since you got your computer. (MSE is a combination antivirus/antispyware so it will automatically turn off Windows Defender. This is normal and not a problem.)

Virus, Spyware & Malware Protection | Microsoft Security Essentials

Once you've scanned with MSE, I'd also suggest you get the free Malwarebytes as a second tool to scan for anything MSE might have missed. (No antivirus is 100% effective 100% of the time so a second scanner is a good thing.) Again, install Malwarebytes, update it, and run the full scan. You can download Malwarebytes from CNET. Use the big gray button on the left that says Download Now (9MB).

Malwarebytes Anti-Malware - Free software downloads and software reviews - CNET Downloads

The first time you run a full scan with either MSE or Malwarebytes it could take well over an hour depending on the size of your hard drive. Again, not to be concerned. When you've become familiar with antivirus programs and how they update and run, you can always experiment with other products. Hope this helps.

Hm, really? I always found it quite useful. I must un-install it then.

If that laptop came with a pre-installed antivirus app, that the trial period has run out on. You'll want to un-install it before installing another version.