Re: xw8400 upgrade -- new CPU installed

Congrats......

I'd put in another duplicate processor, and heatsink.  If one will work I've always found that a second duplicate will also.  Don't expect doubling of performance, but it will be better especially for number-of-cores dependent software.

Regarding not getting a USB drive to save your BIOS settings via Replicated Setup in BIOS read up on the latest,  HERE.

http://h30434.www3.hp.com/t5/Business-PCs-Workstations-and-Point-of-Sale-Systems/Replicated-Setup-tip-for-cloning-BIOS-settings-with-USB/td-p/5069161

I've never had it not work...... try some of the added tricks detailed and if you make the breakthrough let us all know what you did different.

Thanks...