"CPU Burn-in v1.01 by Michal Mienik is the ultimate stability testing tool for overclockers. The program heats up any x86 CPU to the maximum possible operating temperature that is achievable by using ordinary software. This allows the user to adjust the CPU speed up to the practical maximum while still being sure that stability is achieved even under the most stressful conditions. The program continuously monitors for erroneous calculations and errors ensuring the CPU does not generate errors during calculations performed under overclocking conditions."
No I think its meant to overpower the system, check how fast it can go automatically, and then tell you the max safe speed it reached. You can then switch the settings to that amount, so I have no idea why you can't