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Upgrading from E4300 to E5700 causes machine to hang at boot.

idata
Employee
1,353 Views

Hi,

I just bought a LENOVO ThinkCentre Minitower M55e 9637-Q2U Desktop, Intel® Core 2 Duo E4300, 2GB, 80GB,CD-RW/DVD combo, Windows XP Professional machine, and I wanted to upgrade to a E5700.

Both processors seem to be lga775 so I did not think it would be an issue. I bought a new processor, and installed it in the lenovo, but then the machine will freeze at boot. I can't access BIOS, nothing... no beeps or other indicators that anything is wrong, just won't go past the post screen. I put the old processor back in and it boots up fine, no issues.

I updated the BIOS to the latest version http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-66778 http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-66778 and shut down the PC, installed the new CPU again, same issue... is there something im missing/can try?

Thank you!

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DSilv11
Valued Contributor III
451 Views

Your going to have to ask Lenovo, but I suspect the BIOS does not know how to configure this processor.

The hardware may or may not be able to support the processor in data paths and voltages since they are both 775, You would have to go look up the 2 processors specifications and check the Land Listing and Signal Descriptions section to see if all 775 pins are the same. Just because the socket is the same size, does guarantee that the processors will be compatible.

.

Their hw manual http://download.lenovo.com/ibmdl/pub/pc/pccbbs/thinkcentre_pdf/42y4652.pdf http://download.lenovo.com/ibmdl/pub/pc/pccbbs/thinkcentre_pdf/42y4652.pdf pg 129 list their supported processors, however they have not updated the manual since -- Fourth Edition (September 2007) andhe most current BIOS for the unit came out Version:2OKT48ARelease Date:2008/12/05

But the processor did not release until Q3 2010 it is highly unlikely they have support code for the newer processor in this old of a BIOS.

Product Namehttp://ark.intel.com/Product.aspx?id=42801 Intel® Pentium® Processor E5700 (2M Cache, 3.00 GHz, 800 MHz FSB)http://ark.intel.com/Product.aspx?id=28024 Intel® Core™2 Duo Processor E4300 (2M Cache, 1.80 GHz, 800 MHz FSB)Code Namehttp://ark.intel.com/ProductCollection.aspx?codeName=24736 Wolfdalehttp://ark.intel.com/ProductCollection.aspx?codeName=2680 ConroeStatusLaunchedLaunchedLaunch DateQ3'10Q3'06Processor NumberE5700E4300

idata
Employee
451 Views

Thank you for the reply, that sounds logical I posted this on the lenovo forums, I hope that someone will let me know there. If not I may try the E4700 released about the same time as the last BIOS update and hope that works.

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