I am attempting to convert my Windows 8.1 Pro installation from BIOS to UEFI. I followed these instructions. However, I cannot boot without the enabling the Compatibility Support Module (CSM). Windows boots fine in UEFI with CSM.
The motherboard emits an audible error code (
short) and does not output a display signal. I am using Intel HD Graphics 4000 with a DVI-to-HDMI cable. I booted with CSM and updated the Intel Graphics Driver to 10.18.10.3345 and the motherboard's BIOS to 1301, yet the problem persists.
Interestingly enough, I installed a discrete Gigabyte GTX 670 and I could not boot without CSM enabled, either. However, instead of an audible error message, it somehow output an on-screen message that the GPU does not support UEFI. I upgraded the discrete graphics BIOS, and hence forth, could boot in pure UEFI without CSM!
I am to understand that in order to disable CSM, the graphics chip must support UEFI. According to my research, Intel Graphics HD 4000 should support UEFI boot. I do not know what version BIOS Intel Graphics HD 4000 is currently running, but I assume it would be updated with the latest driver.
How can I boot in pure UEFI without CSM with Intel Graphics HD 4000?
- Windows 8.1 Pro
- Asus P8Z77-V LK
- Intel Core i5-3570K