Gee, I barely can believe this, tell me it is not true.
Is it possible that a virus produces the same problem on two computers on a network or is it just a coincidence and it is not a virus but just bad luck that the C drive is damaged and has to be replaced.
In device Manager:
The CD-Rom is not shown
The Hard Drive is not shown
Primary and Secondary IDE Controller has a Exclamation mark.
The first PC by changing the hard drive only fixed everything, now I have a second PC with the same problem.
BUT all of these CD-Rom, hard drive is recognized in the BIOS.
What produces this problem?
If it is a virus (and I've tried detecting with a virus program on some other machines but not all, with no negative result) can it reproduce itself on my other machines within the network or even outside my network via my friends?