Moving CPU’s between Motherboards

[Wjp1998]

Hi, so I recently moved an FX 6300 processor from an ASUS mobo that had a faulty power connector on the mobo (and would no longer power on). I moved it to an ASUS Crosshair IV Formula motherboard, with the same AM3 socket, using a YouTube to show me how to move the cpu and how to apply thermal paste (I used the pea dot method) since I’ve never dealt with installing CPU’s before. I get my hard drive connected, plugged in the rx 580 I just bought, and power everything up : and there’s no display, no boot noises from the hard drive or motherboard. There are power led’s on the right side of the motherboard indicating where power is running to: (from left to right) CPU, DRAM, VGA, and BOOT_DEVICE. The only LED powering on is the CPU LED. Meaning power isn’t getting past the CPU. I removed the fan and the CPU, and I’m at a loss for ideas. The thermal past applied quite evenly across the top of the CPU and the bottom of the fan, there was no spillage over. I lifted the tab and pulled the CPU out to check the bottom; none of the pins were in the slightest bent....does anyone have any ideas as to why power isn’t getting past the CPU? 

[LukeSavenije]

try loosen the cooler a bit, or tighten it up a bit, maybe that helps?

[thedabbler]

Also might try checking the supplemental cpu power cable.

Make sure that they are all seated properly.

[minibois]

That motherboard is AM3, the CPU is AM3+.

Some AM3 boards support AM3+ CPU's, but looking at the CPU support list for your board; the FX 6300 is not on that list:

https://www.asus.com/Motherboards/CROSSHAIR_IV_FORMULA/HelpDesk_CPU/

 

You can try updating the BIOS, since this list is just what Asus has tested, but there are no guarantees of it working on that board

[Jurrunio]

did you plug in the EPS connector (or CPU power)?

 

also a chance that the board just isnt compatible. AM3+ socket is found on the Crosshair V