I have an Acer that the operating system is Windows 8 and the client thinks the machine has a virus, is to know before loading the whole system is infected?

And the map of the HD partition, would analyze to see if everything is okay also before loading the operating system?

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Сообщение от eletmoraes

I have an Acer that the operating system is Windows 8 and the client thinks the machine has a virus, is to know before loading the whole system is infected?

And the map of the HD partition, would analyze to see if everything is okay also before loading the operating system?

You need to get and start executing boot-loading anti-virus program on disc, or so-called "emergency disk", but it a process, possibly, has a lot of time (2—10 h). If a client has an alarm about the damaged files, you need to check up all disc of HD this anti-virus program, and reinstall the Windows.
The map of the HD partition does not relate to the action virus, a map shows only condition of not programmable functions of HD.

For complete diagnostics it is possible to check up disks a built-in utility or other program. It is the protracted process, if a lot of files is on disks — scarcely it needs these work, if nothing specifies on the disrepair of HD.

I tried to use the kaspersky 10 Cdboot initialized by dvd but the virtual program of kaspersky not found the C drive where you installed the windows 8 (who use FAT or NTFS)

It is strange... If a disk disappeared, and there was important information on him, it is needed to find all of the lost files and save them on the separate carrier of data before reinstall the Windows. Also to copy and save all of other files. Then format all disc of HD and mark out a new disk sections by the special boot program. So will create the disk "C" and other disks ("D", can be yet "E"). Then — reinstalling the Windows.