GAS1981: Thank you very much for joining the Intel® Processors communities. We are sorry to hear the processor is not working as expected.
Based on the information you gave us, it seems to be the problem could be related to the processor itself, since the PC with the Intel® E5500 processor works without any problems. In regard to your question, to make sure the BIOS is not the problem, please get into the BIOS and reset the BIOS setting to defaults, the processor should work just fine that way.
Please make sure the proper memory RAM for the processor is installed as you can confirm it on the link below:
Additionally, I was looking for the latest BIOS version for this board in order to try a BIOS update, and I noticed that Windows® 10 is not listed as compatible with this board, so the problem could be related to that as well:
Another option to try to fix this problem will be to re-install Windows from scratch or to test the Intel® E8400 processor on a different board with Windows® 10 to confirm if it shows the same behavior.
In case you are interested in replacing the processor, you can verify with the place of purchase if they have the option to do that for you or if the processor is still under the Intel 3 years of warranty you can get in contact directly with them so they can further assist you with the replacement process:
For phone support, depending on your location, you will see the contact information on the links below:
EMEA contact information: http://intel.ly/28QeAF3
Any questions, please let me know.
good evening thanks for the assistance, regarding bios motherboard and general drivers are all up to date, for the processor unfortunately I can not do anything because it's a processor I bought through a desktop PC used time ago. at moments i can not do any trial of the processor because i do not have another motherboard to check if it's a problem between motherboard and cpuRegarding the memory I have installed I checked it is compatible and is the one described by intel, anyway thanks and good evening