After reboot, wait for the CMOS to reset before proceeding.
After reboot, wait for the CMOS to reset before proceeding.
I updated my Strix Z270e gaming BIOS from version 1302 to 1501 as planned. However, it didn’t start properly—no display, not even backlighting. Debug LEDs flashed orange for dram and red for CPU roughly every ten seconds. After some troubleshooting, I returned to the original BIOS version 1302 with a single RAM stick installed. Once I removed the CMOS battery briefly, I managed to boot into BIOS and then into Windows. But restarting caused the same problem until I removed the CMOS battery again. I’ve re-flashed the BIOS using new files, disabled the GPU, and used the integrated GPU, but nothing changed. I also swapped the RAM stick and tried different slots. Any suggestions help? Even if it’s just to replace the mainboard, I haven’t found other discussions about this issue. System specs: Windows 10 64-bit, Intel Core i5 6600K, 2x16GB DDR4-3200 RAM, GTX 1070, 700W PSU, M.2 SSD on mainboard and PCIe adapter. BIOS settings: XMP disabled, Fastboot off. Please advise if the RAM failed during flashing or if the board needs replacement. Updated April 29, 2025 by LarsFromMars
Quick check, which connection are you using for the signal output? HDMI or Display Port? Experiment with different cables and ports on both the GPU and the monitor. Noticed this problem on this specific motherboard before. Didn't attempt to remove the CMOS battery.
Let me know what you'd like rephrased, and I'll adjust it for you.
Here are some steps I’d consider:
- Perform a firmware reset using the CMOS battery for at least 15 minutes.
- Ensure XMP is turned off.
- Confirm Fast Boot is also disabled.
- Attempt to flash the BIOS to a version ranging from 1302 to 1501 (if available).
- Experiment with different RAM slots and check for improvements (do this without XMP enabled).
If unsuccessful, it might indicate a problem with the chipset after trying to update the BIOS.
sooo here we go with the stuff i forgot to mention the 15minute clear is something i havent done so far but ill do so. Xmp as well as fast boot are deactivated, unfortunately there isnt a bios between 1302 and 1501. I had been running 1302 without issues without problems for more than a year. I have reseated the Ram multiple times and moved it to different slots. And yeah, no progress or change in the behavior. In regard to your earlier comments, ive tried both hdmi and DP on two different monitors when the issue first appeared. A fault with the bios chipset is what is most likely the culprit i guess.
After resting for a few days, I visited my parents and used an old, slow RAM kit. I also took out the mainboard from the case and performed a 100% minimum setup. To my surprise, it started up completely normally. It seems the RAM sticks I installed during the BIOS flashing might have stopped functioning properly or required a different BIOS configuration to work. I haven’t tested them on another system yet, but I plan to do so once I find someone willing to share theirs.