About a month ago, Artemis virus infected my computer. Was able to get rid of it, but the computer has never been quite right since, mostly running very slowly, especially when many programs were open. A few days ago, the wireless internet became unreliable, it works for a minute or 2 and then is unable to detect any wireless networks at all, but if I plug in, it works, but slows down after some time.
The laptop is a ASUS X540L and it runs Windows 10. I have run Malwarebytes Anti-Malware and McAffee anti-virus multiple times, and it doesn't detect anything.
Any help much appreciated.