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i5-2500k = Warning: An unsupported processor is detected on this system

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  • CPUs
  • Intel i5
  • Processors
  • Motherboards
  • Build
Last response: in CPUs
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November 19, 2013 2:31:18 PM

Recently completed my first ever PC build and have run into this error message at startup, "Warning: An unsupported processor is detected on this system..."
PC did not originally show this message for the first two weeks of operation. Had some CPU temp heat issues that shut the PC down one evening and suddenly this message appears at boot up every time. Heat issues are resolved.
I have flashed the BIOS to the current version, but still get the same message.
System specs:
MB - Intel DZ68BC LGA 1155
CPU - Intel i5-2500 Sandy Bridge
RAM - 2x4 GB Corsair Vengeance
PSU - EVGA 600B 600W Bronze
HDD - Seagate Barracuda 1TB
ODD - ASUS DVD/CD RW
Monitor - ASUS VX238h
Case - NZXT Source 210 Elite
OS - Windows 7 Home Premium 64-bit
Keyboard and mouse.
I am using the integrated graphics and sound of the MB, so no GPU or soundcard installed.

More about : 2500k warning unsupported processor detected system

a c 238 à CPUs
a c 199 V Motherboard
November 19, 2013 2:54:10 PM

Try clearing CMOS either with the jumper on the motherboard or by removing the battery for about 15 minutes. Are you getting any errors or is it just displaying that message and then going on to boot correctly?
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November 19, 2013 4:53:55 PM

anort3 said:
Try clearing CMOS either with the jumper on the motherboard or by removing the battery for about 15 minutes. Are you getting any errors or is it just displaying that message and then going on to boot correctly?


I have cleared CMOS by removing battery twice. First time for 15 minutes or so, second time I bought a new battery as I was having some BIOS event issues that showed the battery might be failing.

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a c 238 à CPUs
a c 199 V Motherboard
November 19, 2013 5:40:42 PM

Sounds like you might have damaged the CPU or the motherboard. What about the other part of my above post? Are you getting any errors or is it just displaying that message and then going on to boot correctly?
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November 19, 2013 7:30:23 PM

anort3 said:
Sounds like you might have damaged the CPU or the motherboard. What about the other part of my above post? Are you getting any errors or is it just displaying that message and then going on to boot correctly?


The PC will not boot into Windows 7 any longer. I finished this build about three weeks ago and everything was fine. Went into BIOS to see if I could change settings to get my RAM to run at 1600MHz speed rather than the default 1333MHz. Honestly, didn't know what I was doing, but thought I could figure it out. Made some changes and the PC shut down on it's own. It would then restart for just a few seconds, then shut down again. It repeated this process 3-4 times before I shut it down for good.
Afterwards, I discovered the CPU was having some heat issues. Namely, it was idling at 65°C. worked with some new thermal compound Artic 5 and reapplied TC and reinstalled stock HS several times but could never get the temp down. Just installed a Cooler Master Hyper 212 Evo and CPU temp is now down to 45°C.
Also, I have flashed the BIOS to the most recent update for my MB (Intel DZ68BC). BIOS seems to be fine, all settings are back to default, but cannot boot to Windows at all. It auto runs Windows repair, but the repair is unsuccessful. Not sure what to do from here and any help is appreciated.

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a c 238 à CPUs
a c 199 V Motherboard
November 19, 2013 7:59:59 PM

Without knowing exactly what you did it's hard to say. You obviously overclocked somehow and not in a safe way. Did you raise the BCLK by any chance? If so it could have even damaged the hard drive. The heat issues had to come from overclocking. A stock speed CPU is fine with the stock cooler.

How about a complete reinstall of Windows? Have you tried that?
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