replacing i5-2400 with i7-3770

burchsranch

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hi bought a used i7-3770 off ebay, and replaced my i5-2400 on a gigabyte z68ma-d2h b3 with bios f10 and everything was fine with the i5-2440 but when i installed the i7-3770 and booted to bios everthing looked good at 39c but when i booted to windows 10 after 1 minute screen would go black but compouter still running, tried rebooting 4 or 5 times and same, then reinstalled i5-2400 and everything was fine again. does this mean i got a bad processor off ebay? it was used or maybe old motherboard wont run it?
 
Solution
1) It's not a BIOS support issue just to clarify. If that was the case the system wouldn't even boot.

2) Settings?
I would expect the motherboard to detect the CPU and apply the correct settings by default.
*However, I would still:
a) set to FACTORY DEFAULT, then
b) set memory to "XMP", then
c) SAVE, then
d) use "Memtest86" and run a full pass (roughly 30min per 8GB) www.memtest86.com

That tests memory but also the CPU a bit.

3) My guess is a bad CPU. However, since it failed so easy it makes me wonder as that should be obvious unless someone had a motherboard die then yanked out the CPU without testing in another system? A power surge for example might have fried multiple components.
- Temperature is only one issue. A CPU can have...

burchsranch

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no, looked through the bios and it was showing the 3770 and the temp, voltage etc, first time doing a processor upgrade, didnt know you had to change anything, cmos looked like it was more for master slave, and memory. also i used my old stock intel cooler from the i5-2400 dont know if that makes a difference it showed 39c for cpu temp in bios
 
1) It's not a BIOS support issue just to clarify. If that was the case the system wouldn't even boot.

2) Settings?
I would expect the motherboard to detect the CPU and apply the correct settings by default.
*However, I would still:
a) set to FACTORY DEFAULT, then
b) set memory to "XMP", then
c) SAVE, then
d) use "Memtest86" and run a full pass (roughly 30min per 8GB) www.memtest86.com

That tests memory but also the CPU a bit.

3) My guess is a bad CPU. However, since it failed so easy it makes me wonder as that should be obvious unless someone had a motherboard die then yanked out the CPU without testing in another system? A power surge for example might have fried multiple components.
- Temperature is only one issue. A CPU can have bad transistors and fail.

4) The only "fix" I can think of is to experiment with BIOS settings.

a) Start by disabling CPU cores. I don't think you can choose which ones, but choose a SINGLE CORE and see if that's stable to start.
- if so, then add more cores

b) Frequency/voltage
- I don't know what your options are here, but drop the FREQUENCY as low as it will go.

c) Several other options?
- disable TURBO
- disable power savings features

5) GPU:
You didn't state whether you use the iGPU in the CPU, or if you have a dedicated video card.

*If you don't have a dedicated video card, then borrow one or get a really cheap one for testing. It's possibly only the VIDEO is the issue.

6) If you have a SPARE drive (SSD or HDD) of at least 60GB then:
a) unhook other SSD/HDD's
b) Install fresh copy of Windows and test

7) Linux alternative:
- burn a USB or DVD (i.e. Linux Mint), boot to it and test. If hardware is the cause, then it too should crash.
- *Advantage of LINUX is you don't need a drive. It can run from the USB or DVD.

8) Other testing:
There is an Intel CPU Diagnostic but it's pointless since you crash so quick. I'll list it anyway:
https://downloadcenter.intel.com/download/19792/Intel-Processor-Diagnostic-Tool

9) TEMPERATURE
- this is not the issue. You can get to about 100degC and even then the CPU would just throttle. Ideally you don't want to exceed mid 70's range for maximum life.
- *IF you get this sorted out I would suggest a non-stock cooler. I like the Cryorig H7, but the Cooler Master Hyper 212 EVO and a couple others are okay too.
- I recommend a different CPU cooler due to NOISE, as the cooling is probably good enough under load with stock anyway. Then use the motherboard fan software from support site.

SUMMARY:
- I'm mostly certain it's a bad CPU
- MAY be able to work around it with settings change in BIOS
- if not, then return the CPU

Again, if it is a bad CPU it's surprising to me that the seller does not know. Best case is he yanked it out of a failed system without testing.
 
Solution

burchsranch

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burchsranch

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thanks already boxed it up and sent it back, under ebay return, to scared to mess with it, i have a new evga 1060 gb probally should have not even upgraded as i am playing battlefield 1 at max settings and 75 to 100 frames