Even though SIMs4 is not very very intensive compared to a lot of other games today this was enough (tested in another laptop with the same i5-3210M and no additional graphic controller) to overheat the processor. This seemed to have messed up the graphic card drivers causing the laptop had resorted to using the integrated Intel graphics controller. It seems that the overheating issue was caused by the Windows 10 April 2018 (1803) update. You could also create a bootable USB to Windows 8.1, guide here.Ģ) ran '5fcn95ww_public 64bit.exe' (right click and 'Run as Administrator') - it failed with error code -255, I ignored this.ģ) ran 5fcn95ww_private 64bit.exe (again right click and 'Run as Administrator') - This succeeded to install and update the BIOS.Īfter this I returned my original Windows 10 HDD to the laptop and the BIOS was accessible via all the normal routes, using the Lenovo button, and via the Windows 10 recovery options and has continued to work. For this I used a spare HDD and installed Windows 8.1 so I could leave my original build of Windows 10 untouched. To resolve this, I took the following steps.ġ) boot to Windows 8.1 (the BIOS updates from Lenovo are for Windows 7 or 8 only). Prior to the above steps neither of these BIOS updates had worked. The sequence is to run the 'public' BIOS update 1st and then the 'private' BIOS update. At this point I tried again to update the BIOS using the files from Lenovo found here. After resetting the date and time and changing other settings in the BIOS, when you reboot your laptop the same issue will return, no access to the BIOS.

You should get s CMOS error and a prompt on the screen to press F2 to access the BIOS. This is what I had to do to resolve both the BIOS access issue and the overheating issue.ġ) removed the power cable, remove the battery, remove the cover, keyboard etc to gain access to the BIOS battery ( see video here).Ģ) removed the BIOS battery, waited for a few minutes (10 to be sure) and then reinsert the BIOS battery.Ĥ) Connect power and power on.

Like you I 1st tried to access the BIOS to look at setting there and found I could not access it whatever I did. Since the Windows 10 April 2018 (1803) release my daughters laptop Z580 started to overheat and dying while she was playing SIMs4.

I have just had the same or similar issues. Not sure if you fixed your issue accessing the BIOS and the underlying fan and cooling problem.

Ideapad z580 drivers