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PC keeps restarting after changing the Cpu from core i3 2100 to core i5 3570k

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August 12, 2013 9:30:46 PM

hi all
i have a MSI motherboard (PH61A-P35 (B3) ) and i was trying to change the cpu from core i3 2100 to core i5 3570k which is as far as i know is compatible , but when i switch the pc on ,it keeps restarting and it won't boot , i opened the cpu and put it back in with no luck , i also tried to re-seat the cooloing system also it didn't work so i put my old cpu back and it worked fine .

so can u please advise me on what can i do ?

regards

a c 167 à CPUs
August 12, 2013 9:41:14 PM

The i5-3570K is supported as of BIOS version 7732v20.

If you have this BIOS or higher there isn't much I can think of that could be a problem.

1) 4-pin power cable connected.
2) visually inspect i5-3570K for damage.
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a b à CPUs
August 12, 2013 9:43:52 PM

I figure you are using Win 7 or 8. Windows has security features that restrict the use of the software license (key) on multiple installations or systems. The new cpu is seen as a new system and windows rejects it. You can either reinstall windows or try contacting MS support.
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a c 127 à CPUs
August 12, 2013 9:52:13 PM

Is it powering on then off or does it get to the OS and then power off? Those can mean different things.

If it is powering on then off it means that the BIOS is not recognizing the CPU. If so then you need to update your BIOS to at least 7732v20 with the older CPU and then install the new i5.
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a c 167 à CPUs
August 13, 2013 5:23:41 PM

Dogsnake said:
I figure you are using Win 7 or 8. Windows has security features that restrict the use of the software license (key) on multiple installations or systems. The new cpu is seen as a new system and windows rejects it. You can either reinstall windows or try contacting MS support.


No.
If this was the issue, he'd still boot into Windows then be asked to run Activation again which would take five seconds and be done.
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a b à CPUs
August 13, 2013 8:40:32 PM

Sounds like the PSU can't handle extra wattage
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August 13, 2013 9:35:31 PM

refllect said:
Sounds like the PSU can't handle extra wattage


Well first of all I know it's not because windows see the new cpu as a new system. Windows will only see a new motherboard as a new system has nothing to do with the cpu.

First things that comes to mind is your bios isn't up to date. Make sure you updated your bios because you are coming from a sandy bridge cpu so your board may not have support for your new cpu without a bios update. On the motherboard manufacture website it will have a list of cpu's your motherboard supports and what bios update is needed for that specific cpu to be supported.

Does your pc even boots into windows or does it just restart right away after you have turn the computer on?


We will need more info to make a better guess to what the problem may be.
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a c 127 à CPUs
August 13, 2013 9:45:08 PM

^Just as I said. Get plenty of systems with the same issue and it needs a BIOS update.
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August 13, 2013 9:51:39 PM

jimmysmitty said:
^Just as I said. Get plenty of systems with the same issue and it needs a BIOS update.


Yes I know:) 
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a c 167 à CPUs
August 14, 2013 5:57:39 PM

*No point in further comments until we hear a reply.
Please stop talking about the BIOS update as well. It was mentioned in the very first reply.
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a b à CPUs
August 15, 2013 8:37:35 AM

BTW there are many instances where Windows does not boot because of hardware changes and it never gets to the point of asking for reactivation. In these cases the OS just never sees the hardware as its' own and never boots. Since the system runs as it should with the old cpu, either the new cpu is bad, not installed properly, not supported by the MB (bios or whatever) or there is an issue with the OS software. Windows stores its' boot information (requirements if you like) on the 100MB hidden partition. When the OS looks there and sees a mismatch with the actual hardware it stops. Depending on the discrepancy it may never get to boot and ask for an update.
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August 15, 2013 10:52:02 AM

photonboy said:
*No point in further comments until we hear a reply.
Please stop talking about the BIOS update as well. It was mentioned in the very first reply.


The sheriff is in town...
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Best solution

August 15, 2013 11:26:08 AM

Just boot off a Windows CD or thumbdrive and you'll be able to find out if it's the OS that's the issue - though I do doubt it very much.
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