How can I check if I have a virus in the BIOS and what is the difference between formatting and full format in Windows 7?

Hello

Recently I found a rootkit on my computer, especially rootkit.tdss.tdl4. Of after I read that I got one of the best!

I have two questions:
Firstly - how can I check if my BIOS was hit without blinking? I read that this Trojan horse could have started exactly from the BIOS, and very likely to stand again after doing a clean install. I have a laptop HP seems like flashing procedures require to disconnect the disk hard - is this true for laptops?

Second, is how I format to ensure that clean the MBR? I have Vista and want to upgrade to Windows 7. I have Windows 7 upgrade ultimate disc that can do a custom install which should format entirely. Tell me if I think too old school here but should be low (or zero) format is required? From what I've read, the function of full format of Windows 7 should be as powerful as the low level. is that correct? I don't mind the overtime work as long as I don't have any problems (at least with this Trojan) later. I also fear that upgrading Windows 7 disk might not have all the features of formatting as a full version, which is a nonsense?

Thank you very much for your help!

(Tdsskiller Rootkit removal tool)

http://support.Kaspersky.com/viruses/solutions?QID=208280684

In addition, suggest that you scan your computer with MalwareBytes' to remove all traces that may still be present.

MalwareBytes Anti-Malware (MBAM)

http://www.Malwarebytes.com/>

The free version of MBAM is a scanner at the request and offer no protection "real time". Keep and use it as "second opinion" scan.

Windows 7 tools to format the drive should be sufficient:

Boot from the Windows 7 DVD

Click Install now

Accept the license agreement

When the option is displayed to select a type of installation, click (Custom advanced)

Click on drive Options

Select the disc/s click on Delete

Click new

Click on apply

Click OK

Click Format, and then click next to proceed with the installation

Tags: Windows

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