Note From The Author, Gus
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If you are having difficulty in starting your computer, it could most certainly be a virus; but where is it? It is not invincible that it lies within the BIOS. To remove a virus from the BIOS, you need to follow a few steps.
First though, make certain it’s a virus, then a virus in your BIOS. If you are unsure, start off by reviewing the following articles:
If you have done most of the above, or certain it is a virus that is halting your computer, then the best way to discover where the virus is located is to do a few additional troubleshooting steps.
Boot to a antivirus rescue CD and scan your computer. I recommend using BitDefender; it’s free to anyone and simple to create. Follow these instructions for details: Using BitDefender Rescue CD to Scan For Viruses
Now, if you boot your computer and have the same issue, we have narrowed it down to a virus in the boot sector of your disk (HDD), or in the BIOS. The next instructional set will determine if the virus is in the boot sector (of your HDD) or in the BIOS.
If the recovery or install process starts, your virus is most likely is in the boot sector of your HDD. If not, then it’s in your BIOS.
If the virus appears to be in the HDD boot sector, you can use GMER. Find a download link and information here: http://www.gmer.net/#files
Typically, this is executed from the system drive (C:), so not certain if it will work properly from a optical disc (CD/DVD).
You can attack a virus in a couple ways. First, would be to load the BIOS defaults by purging the power. This process would require you to also remove the CMOS battery. However, it is password coded. The unfortunate thing about this is it hard-coded in the CMOS and does not leave even with power removed. You would need to obtain the master reset code to follow this process.
Here are the instructions to flash your BIOS…
Last resort, contact a professional service, such as Malware Experts.
Hopefully, this article has provided you a means to remove a virus from the BIOS.