CPU upgrade

PavelChehoff · 23 Nov 2010

Hi guys,
I currently have bought new cpu but for some reason system does not want to start. What could be wrong? I have changed information in bios and also upgraded it to latest version. When stick old cpu back and change details in bios for old cpu, everything allright.
I calculate power usage, seems allright.

My old system:
Gigabyte GA-890GPA-UD3H ver1.0
AMD Phenom II x2 550
2x2gb Corsair 1333Mhz + 2x1Gb Corsair 1600Mhz
Ati Radeon HD5750
PSU 650W

New system is the same apart of cpu which is AMD Phenom II x4 965

DMHolt57 · 23 Nov 2010

Did you upgrade the bios before removing the X2 processor?

PavelChehoff · 23 Nov 2010

well... i put x4 first, it did not lunch windows so i remember that i need to upgrade bios so put x2 back. upgrade with x2 installed then put x4 back. its still not loading windows.

PavelChehoff · 23 Nov 2010

i have just managed to lunch system on two cores only, disabling other two cores in bios but it is not guaranteed start. once allright another 2 times would not start. I am completely lost.

Mashed1316 · 23 Nov 2010

DOA processor maybe? i'd RMA it.. could be a faulty one...

LiquidSnak · 23 Nov 2010

Which cores did you disable, per chance?

linnemeyerhere · 23 Nov 2010

Some people here have said that a clean install or at least re-install of windows 7 is needed with a CPU change and for sure when you throw in a new mobo which I understand isn't the case here. What do others think, regarding this?

PavelChehoff · 23 Nov 2010

i disable core 2 and core 3. core 0 and core 1 are enabled. will try to reinstall win tomorrow hope it help.
how you normally know that cpu is bad? never had any bad ones before, i dont know how to check it.

Zepher · 23 Nov 2010

linnemeyerhere said:

Some people here have said that a clean install or at least re-install of windows 7 is needed with a CPU change and for sure when you throw in a new mobo which I understand isn't the case here. What do others think, regarding this?

I swapped from an Asus P5Q Pro, Q6600, and 8GB DDR to an i7 870, Asus P7P55D-E, and 8GB DDR3 2 weeks ago and Windows booted right up, found the new hardware, rebooted a few times and I was good to go.
My Windows 7 Ultimate 64bit install is 15 months old now and runs great.

My brother did the same thing 2 weeks ago as well.
AMD quad core to an AMD 6 core and motherboard swap as well and his booted up just fine too.

linnemeyerhere · 23 Nov 2010

Zepher,
That's good as reading that is keeping me from a 2.6 to 3.4 upgrade. Cheers !