There are three reasons
which will require your PC to be rebuilt.
1. A virus
infection destroyed part of the operating system which now
causes system crashes and program hangs.
2. The virus is
not removable since the virus jumps to different folders and
changes names every few seconds making it impossible to locate.
3. There have been
many programs added and removed or were not compatible causing
parts of the operating system to become damaged or removed
resulting in intermittent problems.
The Rebuild process
A PC rebuild
is when all user data (i.e. emails, address book, documents,
pictures, etc.) are removed from your hard disk and temporarily
saved in another PC. The hard disk is formatted cleaning it
completely. Then the operating system of choice is installed
along with user programs. All software is optimized for
performance and function. Finally saved user data is transferred
back to the original locations. The entire process takes one day
to perform and an additional day is used to run the PC ensuring
there is nothing that goes bump in the night.