(This is particularly important in light of recent news stories.
(Security software to a greater or lesser degree prevents infection, but if your security software has already failed, it is unlikely alone to be able to solve the problem.
Remember, no antivirus program can detect 100 percent of the millions of malware types and variants, particularly given the fact that literally thousands of new threats spring up each day.) Similarly returning to an older System Restore point might help, but the chances are the malware will be ahead of this trick.
Do so by unplugging any wired connections, and switching off Wi-Fi on your laptop. This is a version of Windows that runs without many of the programs and processes required by full Windows. Windows 8 and Windows 10 PCs start up quickly so there's not enough time to press F8.
It will allow you to use your PC without doing any more damage, and it should help you to find out what the problem is. To boot into Windows Safe Mode in Windows 7, Windows Vista or Windows XP, first shut down your PC. For Windows 8 and Windows 10, at the Windows login screen, simply choose restart and hold down the Shift key.
That is the very least you need in your security arsenal.
The easiest way to get such security on your PC is to purchase an internet security suite.Read our internet security software reviews and Group test: what's the best security software? (Windows 8 and Windows 10 both have basic antivirus installed, but you are always better off investing in something more robust.) Incidentally, if you do have up-to-date security software and you still think you are infected, simply running a scan is a good first step, but it is likely it won't solve the problem.Once installed any malware worth its salt will be able to disable your antivirus.How to clean up your PC after infection by a virus or spyware, or any of the other net nasties out there.We'll start, however, by giving you some quick and basic advice on prevention.(System Restore is a useful trick to know, however.