The first and obvious choice will be discussed at length, Cleaning the system of its infected programs and related files,preserving the data and configuration as much as possible (sometimes additional steps are required, such as correcting issues stemming from the malware removal). The second choice is more extreme, and involves backing up your data, and re-installing everything.
Most people prefer to save themselves the hassle of starting over with a fresh install, (though in some cases, it may be required anyhow), so we try to clean the system first. There are many paid and free scanners out there on the web, a few of the best (most reliable without false positives) we have found are: Malwarebytes, Ad-Aware, and Spybot S&D. A reliable scanner is really helpful because it searches for signs of malware and confirms your suspicions, and then offers to remove the items for you. On the downside of scanners, it is not always obvious what should be removed and some removal programs generate False Positives (an indication that a uninfected file or registry entry is malware when it is not) and removal of files or registry entries that affect your PC ability to boot or use some of the features. Automatic scanners are really a lot easier than the next step, but this next step may be required when scanners let you down. Keep in mind that the BIG Corporate entities do NOT remove viruses for free, so McAfee and Norton have some advertising-ware they distribute, which will update and scan just like their Paid, fully functional counterparts, but will not remove any items that turn up in their results, you must buy their software or pay for support.
Manual removal of Malware is not always easy, and the best method is to examine your startup programs, the processes that are running in the background, and then Identifying these programs as to whether or not you need them and uninstalling or disabling the ones you don't. Here are some of the steps you need to follow to do a review of the programs that are starting up automatically on your computer:
If there are no signs of malware during the above steps, you may actually be experiencing a hardware problem or a software conflict, try selectively re-enabling the startup items a few at a time and rebooting to see if the problem recurs, if and when it does, narrow down the last few items you enabled and reboot until you have determined which program is causing the issue.
Programs like Hijackthis are extremely effective, but ONLY if you know how to use them. Be sure to get some help and at the very least, google search any terms or items that you're not familiar with.
Okay, you've tried a few of the recommended scanners, and gone thru the manual removal steps, and are still having issues. In this situation, it is possible that your registry is very messed up, or you may be having a hardware issue as well. To confirm that your hardware is OK, it will be best to back up your data, format, and re-install. The Windows installation process is very hardware intensive and will reveal any hardware defects by giving errors during the install. If you are unfamiliar with this process, please consult with an expert technician to ensure a proper backup of data, and then getting the OS & drivers reloaded properly. Call us @ 901-837-7799 for assistance!!