I'll give them a call then. The overheating has rendered the system useless as it shuts down during any system load. The over voltage is the only solution that I can see. Going from single core to dual core has my system buckling under the pressure. Thanks again for your attention to my issue.
Before you call them I would check a couple things
1) Make sure the new CPU is compatible with the OEM motherboard. If it's not it can cause alot of problems.
2) When you replaced the new CPU did you clean off the old thermal paste and re-apply. Not doing so can cause overheating
3) Is the heatink on right and is locked down?