Boot Problem After CPU Swap

[mike5757]

So I changed the E6600 in my computer for an E6850 (massive upgrade, right? haha). I didn't change anything else. Now I can only get my computer to boot after I remove the CMOS battery and reinsert it, but if I shut it down and attempt to boot again, it does not work without removing the battery again.

I get the following errors after POST when it works:

The firmware has detected that a CMOS battery failure occurred.
The firmware has detected that a CMOS Checksum Error occurred.
The firmware has detected that the system date/time has not been set.

After these errors it loads Windows just as it did before.

Here's what happens after a successful boot and I shut down the computer. I hit the power button and the fans spin up to max speed like they always do, but they stay there instead of slowing down after a couple seconds as they normally do, and no video output ever happens. There are no beeps or any other indication of an error. It just sits there with the fans at max speed.

Thanks for any input you might have!

Here are my specs:
Intel D975XBX revision 304
E6850 @ stock 3.0 GHz
G.Skill 2x2 GB 800MHz (detected as 533 MHz)
EVGA GTX260 C216
Windows 7 x64

On the positive side, idle power usage is down from 133W with the E6600 to 116W with the E6850. Definitely not what I was expecting.

 

[Bubbaleone]

Assuming the CMOS battery is new I'd suggest removing the cpu, thoroughly cleaning it and the socket with CRC QD electronic cleaner (or similar), then carefully reseating it. If you were booting fine before the swap I'd first eliminate the possibility of bad CPU seating, and double check the D975XBX BIOS requirements for E6850 support.