the operating system will fail to start
Most viruses cannot harm hardware, the only type of virus that can harm hardware is a Memory virus, which permanently writes itself to the Ram, or Memory of a computer, the best method to remove the virus is to replace the ram in the computer, which usually cost about 20 dollars for 2-4 gig cards, depending on their speed and retailer.
The easiest way is to put your operating system disk in the computer and do a repair. If you have XP, then it is a nightmare and to long to explain, your better off, doing a install of the OS, then making sure system restore is on and making a restore point. But if you want to try and you have XP, below ill post a repair for the boot. http://pcworld.about.com/magazine/2111p196id112479.htm This is for recovery console. http://support.microsoft.com/kb/314058 Vista and windows 7 are very easy to fix the MBR, you just put in the disk and it will repair it for you.
This is typically referred to as malware, specifically a type called a virus. Viruses are malicious programs that replicate themselves by inserting copies into other programs, files, or the boot sector of the computer. They can damage software, steal information, or disrupt system operations.
The master boot program, and the partition table.
The boot record will not boot anymore or more precisely the message "NTLDR is missing" will be displayed. To remedy this situation boot with a copy of windows and use the "Recovery Console" in the boot menu and at the command prompt type the following: fixmbr and hit enter. Although there is a risk, there isin't much else you can do.
MBR Master Boot RecordA Master Boot Record (MBR), or partition sector, is the 512-byte boot sector that is the first sector ("Sector 0") of a partitioned data storage device such as a hard disk. ( from: http://whitehouse.com)
FALSE
The master boot record is always located at cylinder 0, head 0, and sector 1, the first sector on the disk.
Boot virus
master boot record
Yes. They hide in the boot sector program of a hard drive or floppy disk or in the master boot program in the Master Boot Record.
No. It hides in the boot sector program of a hard drive or floppy disk or in the master boot program in the Master Boot Record (MBR). Don Gus
FAT12, FAT16, or FAT32
The first sector on the Hard Drive
fdisk /mbr