Hey I just replaced my motherboard after my old motherboard died. I was upgraded from the MSI P67A-C43 to the G45 motherboard after I RMA'd it and After I recieved it the board looks like it may have been used because I found there was dust on the back after I opened it from the sealed packaging (Maby repaired?)
I only just put this computer together and I'm still using my MSI P67A-G45 with the old bios (v1.80).
I found my motherboard was giving out diagnostic beeps during bootup although from what I can tell everything is sweet and dandy (I have experienced 1 blue screen after bootup however). 5 beeps... looked it up and it says.
5 Beeps: Processor failure
Diagnosis: There is a problem related to the processor or motherboard. Note that this doesn't mean that the processor is necessarily dead; with a dead processor the system won't boot at all (it runs the BIOS code that is used to start up the PC.)
Recommendation: Troubleshoot the processor. If the processor is not at fault, troubleshoot the motherboard.
"Note: My computer wouldn't power up at all when my system died... this processor obviously isn't dead though"
I've been running Skyrim, Mass Effect 3, Minecraft and World Of Tanks perfectly fine around the previously recorded FPS using EVGA Precision
Its standard practice for some companies to replace RMAed parts with reburbished or open box parts. They have to be repaired/tested while not every part off the line is fully tested, so you can generally expect refurbs to work. little odd with the dust and old BIOS though.
Wouldn't expect the code to stick but I would def update the BIOS as a first step