CPU upgrade won't boot

[Natahan_]

Hey, I'm trying to upgrade a Dell Optiplex 390 as a first PC for my younger sibling. I've bought an i7-3770 (tested and working) as its same socket as what's already in the PC (i5-2400), but when i try to boot it seems to bootloop, the fans spin and then the system shuts off, and then carries on this process until I unplug from the wall. I updated the BIOS to the latest firmware before starting the upgrade, and the PC was working before the upgrade. If I put the i5 back in the socket the PC boots, so I'm not too sure what I can do here. Do I try a new mobo tgat definitely suppors the chip? Do I call it quits and resell the i7? I'm torn right now, I shall list specs and links below but any advice would be amazing.

 

Mobo: Dell MIH61R MB 10097-1

CPU: i5-2400(works) / i7-3770(doesn't work)

GPU: GTX 1050Ti

RAM: 16gb DDR3 1666mhz (2x8GB matching pair)

Boot Drive: SanDisk 64GB SSD (Win10)

 

BIOS ver: https://www.dell.com/support/home/en-uk/drivers/driversdetails?driverId=72X25

 

Optiplex Support Page: https://www.dell.com/support/home/en-uk/product-support/product/optiplex-390/drivers

[Natahan_]

I dont know if this is much help, but I've reinstalled the i5-2400. system has posted and I've gotten some alerts from the system. I'd suspect the i7 isn't compatible and I'd need a mobo upgrade??

[Naijin]

22 minutes ago, Natahan_ said:

Hey, I'm trying to upgrade a Dell Optiplex 390 as a first PC for my younger sibling. I've bought an i7-3770 (tested and working) as its same socket as what's already in the PC (i5-2400), but when i try to boot it seems to bootloop, the fans spin and then the system shuts off, and then carries on this process until I unplug from the wall. I updated the BIOS to the latest firmware before starting the upgrade, and the PC was working before the upgrade. If I put the i5 back in the socket the PC boots, so I'm not too sure what I can do here. Do I try a new mobo tgat definitely suppors the chip? Do I call it quits and resell the i7? I'm torn right now, I shall list specs and links below but any advice would be amazing.

 

Mobo: Dell MIH61R MB 10097-1

CPU: i5-2400(works) / i7-3770(doesn't work)

GPU: GTX 1050Ti

RAM: 16gb DDR3 1666mhz (2x8GB matching pair)

Boot Drive: SanDisk 64GB SSD (Win10)

 

BIOS ver: https://www.dell.com/support/home/en-uk/drivers/driversdetails?driverId=72X25

 

Optiplex Support Page: https://www.dell.com/support/home/en-uk/product-support/product/optiplex-390/drivers

Could be the CPU is not supported.

First Google link I found:

https://www.quora.com/Is-a-Core-i7-3770-compatible-with-a-Dell-Optiplex-390-The-motherboard-that-it-has-is-0M5DCD

 

Answer:

No.

That machine could in theory support 3rd gen Ivy Bridge but Dell used a 4MB SPI Flash chip while the microcode for Ivy Bridge will require a 8MB chip.

There is no way around this because this machine was designed with planned obsolescence in mind as Dell never intended to support 3rd gen chips on that board.

[OddOod]

Welcome to the forums!
Yeah, sorry, that's the HUGE downside of prebuilts, especially the workstation ones: Often they do not allow CPU upgrades, sometimes not even from i5 to i7, but almost always not supporting to the next generation that the chipset should support. 
Also, I will say, even with an SSD and a ton of RAM, a 3rd gen i7 is useful for little more than web surfing. 
Buddy of mine did get decent performance out of a 4790k, but that still chugged trying to game and discord w/o video at the same time. 
Upside: 8700 based work stations are remarkably cheap and my nesting partner rocks that with a 3080ti and gets fantastic performance on her DQHD monitor, usually north of 100FPS on high details.

[Natahan_]

38 minutes ago, OddOod said:

Welcome to the forums!
Yeah, sorry, that's the HUGE downside of prebuilts, especially the workstation ones: Often they do not allow CPU upgrades, sometimes not even from i5 to i7, but almost always not supporting to the next generation that the chipset should support. 
Also, I will say, even with an SSD and a ton of RAM, a 3rd gen i7 is useful for little more than web surfing. 
Buddy of mine did get decent performance out of a 4790k, but that still chugged trying to game and discord w/o video at the same time. 
Upside: 8700 based work stations are remarkably cheap and my nesting partner rocks that with a 3080ti and gets fantastic performance on her DQHD monitor, usually north of 100FPS on high details.

Hey, yeah I think I'm gonna have to do a mobo swap. The only games my brother plays is minecraft, roblox, fortnite, RL, FH4/5 and Fifa, so not the most demanding of titles, but I just wanted to give headroom for the future. But I'm appreciative of all advise given

[OddOod]

21 hours ago, Natahan_ said:

Hey, yeah I think I'm gonna have to do a mobo swap. The only games my brother plays is minecraft, roblox, fortnite, RL, FH4/5 and Fifa, so not the most demanding of titles, but I just wanted to give headroom for the future. But I'm appreciative of all advise given

0.0
Do be careful of mobo swap, most optiplexes use proprietary mobos