F5F Stay Refreshed Hardware Desktop Imac2007 iMac (A1225) fails to start after CPU upgrade (black display).

Imac2007 iMac (A1225) fails to start after CPU upgrade (black display).

Imac2007 iMac (A1225) fails to start after CPU upgrade (black display).

T
Tyson142
Member
Find
148
08-25-2016, 04:48 PM
#1
I replaced an older iMac with a Core 2 Duo T9900 (previously had a T7700). When trying to power it up, the fans would spin, then stop, restart, and display a black screen without sound. The three LEDs on the motherboard lit up, but the LCD remained off. I think the issue relates to the new CPU's 1066 MHz bus versus the RAM's 800 MHz rating. This problem might be resolved by using DDR2-1066 memory modules.
Reply
Reply
T
Tyson142
08-25-2016, 04:48 PM #1

I replaced an older iMac with a Core 2 Duo T9900 (previously had a T7700). When trying to power it up, the fans would spin, then stop, restart, and display a black screen without sound. The three LEDs on the motherboard lit up, but the LCD remained off. I think the issue relates to the new CPU's 1066 MHz bus versus the RAM's 800 MHz rating. This problem might be resolved by using DDR2-1066 memory modules.

Reply
Reply
M
master_scope
Posting Freak
Find
794
08-26-2016, 12:48 AM
#2
I recall that the T8300 iMacs don't work with the T9000 models.
Reply
Reply
M
master_scope
08-26-2016, 12:48 AM #2

I recall that the T8300 iMacs don't work with the T9000 models.

Reply
Reply