Is it possible to turn off 1 processor within a dual core processor?

I have a customer with a Sony Vaio Dual Core laptop.
On of their applications will not run correctly and they have been advised that it will not run on a dual core system.  They have to turn off one of the processors

I'm not an expert on processor technology but I beleive that this is not possible.
Can you confirm that I am right.
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VoxSisConnect With a Mentor Commented:
As far as I know there is NO way to shut down one processor from dual-core because basically on physical level there is only one processor with two cores (kernels). Shutting down one of the cores (even if that is somehow possible) will result in general malfunction of the processor. Any way there is small chance to find 'single processor emulator' somewhere on the internet but I doubt in that.

I hope that my comment has helped you in any way.
Check the bios there maybe an option to disable one of the cores. I know this is an option on several desktops using dual core cpu's so this laptop may have it also.
how about setting /numproc=1 in boot.ini?
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