Fixing a boot up structure that is corrupted due to a virus can be difficult to deal with depending on the extent of the damage done. Reformatting the hard will can fix the boot up structure. If the virus destroys the Master Boot Record then the hard drive is useless paper weight.
You'll need to boot from something else, a rescue disk, the original installation disk or another disk that lets you repair the damage caused by the virus.
If a virus persists on a PC even after formatting it is likely that the virus has been inserted into the boot sector of the hard drive - which is not rewritten when you re-format it. Assuming you are running a Microsoft OS, to fix it, boot using the install CD for the OS and run the first Repair option which will load the Recovery Console from a ramdisk (and doesn't use the hard drive for booting). This requires that your BIOS supports booting from the CD drive. Then run the 'fixboot' command. This is supposed to overwrite the boot sector. You may have to specify the drive letter of which partition to fix.
ALWAYS fix virus problems with the computer running in 'safe mode'. When a computer has been started in safe mode, only the bare minimum systems software are started (so there's less likelihood of any virus finding somewhere to hide !). Run your anti-virus software, and act on any warnings. Re-boot the computer as normal, and it should have solved the problem.
insert boot disc
Attempt to start the computer in Safe Mode and load a minimal set of drivers. Or you can try rebooting the computer with the operating system disk.
You can fix your HP Touchsmart from darkening after boot up by restoring your device to the manufacturer-settings.
Fix your question you idiot, "Does Elsword have a virus?" And no, it doesn't
Housecall is not a virus but an online virus scanner
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Re-boot the computer.
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They allow virus to fix to the host.They help to invade host.