HP Compaq Evo w4000 PC Desktop Logo
Posted on May 10, 2010
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I have faced a problem on Compaq Evo W4000 that there is an error i.e 1801 microcode patch error so how i can remove that error

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  • Posted on May 16, 2011
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I have Compaq EVO W4000. when i plug it automatically switch on the cpu and it doesnot give any display. i think proccersor and ram are still working good. pls help me...

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  • Posted on May 10, 2010
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Hello,

Give a try to update BIOS. Click here and follow the intrsuction

  1. Obtain a formatted 1.44-MB diskette and place it in your A: drive.
  2. Download the SoftPaq to a directory on your hard drive. The file that is downloaded is an executable with a filename based on the SoftPaq Number above.
  3. From that drive and directory, execute the downloaded file and follow the on-screen instructions to build the ROMPaq diskette.
  4. Place the newly created diskette in the A: drive of the computer to be upgraded or restored and cycle system power to boot from the ROMPaq diskette.
  5. Follow the on-screen instructions to select the Compaq System ROM and flash the firmware. WARNING: DO NOT TURN OFF POWER OR ATTEMPT TO REBOOT THE COMPUTER DURING THE UPGRADE PROCESS!!!

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Related Questions:

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1answer

My compaq computer displays 1801-microcode patch error -missing or invalid processor microcod patch please contact compaq computer corporation For a new rom processor stepping what do i do
Contact Compaq on their website to get instructions for your specific processor.
Read full answer
Dec 12, 2016 • Compaq Computers & Internet
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"1801 Microcode patch error. Missing
http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=en&cc=us&prodTypeId=12454&prodSeriesId=96295&prodNameId=97121&swEnvOID=1093&swLang=13&mode=2&taskId=135&swItem=PSG_I15378-37635

And follow the instructions here to upgrade the BIOS. I suggest using their instructions as they will be far more accurate than mine for this specific system and BIOS update.
Read full answer
Feb 10, 2011 • Compaq Evo D500 PC Desktop
1helpful
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I just install 2.0GHz processor but my system keep giving 1801 microcode patch error, what do i do?
The 1801 error is defined as:
Missing or invalid Processor Microcode Patch.

Resolved by:
Applying a new ROM BIOS to support the processor stepping.
In other words, you need a BIOS upgrade. Contact your BIOS vendor and get support for your new processor.
Read full answer
Sep 12, 2010 • Compaq Computers & Internet
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I have i 1801-microcode patch error missing or
from the error code i am going to quess you have a compaq
ok and i hope this helps download the following.
Presario Desktop Models System ROM Update (686Y2 Family ROM) and please read the directions to download. I have made a lot of assumptions here, i dont know your OP system and guessing on the machine type so please bare with me. Best of luck Mel
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Jun 09, 2010 • Computers & Internet
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1801-microcode patch error
Hi according to HP memo see the following answer hope it help:

DESCRIPTION After installing a different system board or processor in systems described in the "Scope," the systems may halt during POST and display an 1801 Microcode Patch Error with a prompt to press the F1 key to continue.
NOTE Pressing the F1 key will allow the system to continue. However, processor performance may not be optimized and the error will repeat each time the system is restarted. HP recommends that the microcode be updated to ensure optimum compatibility and performance.
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Sep 09, 2009 • Intel (RK80532PG0881M) Pentium 4, 3 GHz...
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1801 microcode patch erro
http://admin.utep.edu/Default.aspx?tabid=56

Try downloading the 815 motherboard drivers on the right side of the page.
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Mar 28, 2009 • Compaq Refurbished EVO D310 PENTIUM IV 2.4...
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These are very different CPU's, and you should make sure the board accepts the new one. Check the manual.
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Oct 26, 2008 • Compaq Evo D500 PC Desktop
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1801 microcode patch erro
ya'll need to flash (upgrade) your motherboard BIOS to allow it to be compatible with the new CPU's.
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Sep 17, 2008 • Computers & Internet
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not being rude but take it to a tech. if you have to ask then you really shouldnt be tinkering with your gear as you can mess it up really bad and possibly render it unuseable
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Apr 21, 2008 • Compaq Evo D500 PC Desktop
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1801 Microcode Patch Error
I bought a Compaq Computer, 2.0Ghz, 256MB, 20GB for my College project. When i put the power on, it restarts almost immediately (so many times repeatedly). Then after such reboots, it successfully brings a message "1801 - Microcode Patch Error" and a F1-Boot directive.
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Mar 20, 2008 • Compaq Evo D500 PC Desktop
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My compaq computer displays 1801-microcode patch error -missing or invalid processor microcod patch please contact compaq computer corporation For a new rom processor stepping what do i do

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