Hi, i have a LG desktop computer and it is infected with malware (or spyware) virus because it always pop-ups an antivirus program. I thinks it’s a spam program it says your computer is infected with virus always pop-ups everytime and it annoys me.

It always warns me about the threat of internet and it always blocks it. I uninstalled from the computer and also removed it from the add/remove programs section too but still it pops-up and slows down the computer. The fraud antivirus program is callad (Winibluesoft).

What do you think i should do? Should I re-install windows or re-format the hard drive? Also have a problem when trying to re-install the xp disc from my computer it displays like this:

( No valid system partitions were found. Setup is unable to continue). What does that mean? How do you reformat a Hard Drive plz help? I want to get rid of this virus fast?
I have already downloaded Malwarebytes it’s also blocking that program and it doesn’t start up when i click on it.