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The harddisk data recovery card (named as HDD recovery card hereafter) is an add-on PCI card (also an ISA card before) with a boot ROM to plug on the computer?s PCI slot. The recovery software, which is stored in the boot ROM and is very very like the computer?s BIOS, will run automatically while computer is booting up, and then monitor all operations of reading and writing HDD in either DOS or Windows, by either OS or virus, to prevent the original data on HDD from changing permanently. When you feel or find that data has been changed, or computer slows down, or Windows is crashed, you can reboot computer and ask HDD recovery card to recover the original data on HDD instantly (within half a second).
Hereby, the HDD recovery card can do for you:

Protect data from changing permanently.

Protect Windows from crashing.

Remove virus, worm, Trojan, spy software, malfunction software.

Prevent all viruses from penetrating through our recovery card to changing any HDD data permanently.

Prevent some viruses from running. So the viruses CANNOT do anything, such as changing Windows system files, killing anti-virus software, downloading more viruses, blocking LAN, stealing your files, controlling your computer remotely.