How to Identify Virus in BIOS and Remove them
What BIOS actually mean?
BIOS or Basic Input-Output System is also known as ROM BIOS or PC BIOS and System BIOS. BIOS is a type of firmware used during the boot up process of computers. It is a collection of technical instructions that instructs a computer how to boot up. BIOS information is stored in flash memory of the motherboard and not in the hard drive of the computer. BIOS is a critical section of the system boot up and hence error or virus attacks may cause a computer malfunctioning.
Identifying BIOS virus
BIOS viruses are the toughest. It resides in the firmware that drives the motherboard. Fortunately the BIOS viruses are very rare. Normal virus scan software will never detect a BIOS virus because BIOS is separate from the hard drive of the computer. So, if you are experiencing abnormal system behavior and your virus scanners are not able to detect any viruses in the system, then you may actually have a BIOS virus. BIOS remain unchanged even if the hard disk is completely formatted and Operating System is reinstalled. Common BIOS viruses create warning messages which says that the computer is infected by virus. Once these messages are flashed it is followed by automatic opening of a web browser and loading a page that opens fake virus scanning software.
Pre-Removal method for backing of data
First and foremost you must back up your data before you do anything that may trigger the virus. The first step is to do a full system back up so that you can recover the data from virus threats. Back up your files when you remove the flash drive or simply transfer them to an external hard drive. Once you have taken back up, download the appropriate BIOS flash utility from the support resources of the official computer website. Now just burn it to a CD or DVD.
Reconfigure BIOS and reinstall the Operating System
In order to reconfigure the BIOS, you must first:-
- Remove the hard drives from the infected computer.
- Put the boot CD along with the BIOS flash utility in the CD drive of the infected computer and turn it on.
- The set up page will open up with several options. Select the option that allows you to change the BIOS boot order.
- When the next screen opens, make the settings so that the computer boots from the CD drive.
- Go to the main menu and reboot the system. Wait until the system reboots completely. If the boot system is interrupted the BIOS may be corrupted. (Fixing BIOS corruption issue will require technical know-how. We recommend you to get in touch with iYogi technicians instantly. call us on our toll-free number.)
- After the BIOS flash utility indicates that the reboot process can be completed, reconnect the hard drive and manually reboot the computer.
- Once the computer reboots, format the hard drive and reinstall the OS.
Once installed the computer should function properly again.