Question :
I have a MSI NightBlade X2B gaming-PC that I need to reinstall Windows on, the internal HD has been reformatted externally, but when I try to startup the PC, the HDMI-connected monitor gives only a black screen with and error message saying something like “no HDMI signal detected”… I need to get into the BIOS Boot Menu to fix this, but how do I do that If I cannot see anything on screen ?

What can I do to fix this ?

Answer :
The MSI NightBlade X2B gaming PC not only has an internal HD (usually 1TB), but also a 500GB SSD that is hard to access manually. And Windows has usually been installed on that SSD, not on the HD.
If the PC starts up porperly (lights and sound of running fans), then the fix to getting into the BIOS Boot Menu is to reset the CMOS Battery. To do that, you need to do this :
– diconnect al cables from the PC (Power, HDMI, USB, etc.)
– open the PC housing (slide open the red protectors on the back and unscrew the screws)
– take off the side panel
– if you are in an environment with high static electricity you need to unplug the internal cables from the graphics card, the HD and the power (but usually you’ll be okay if you are in a clean and smooth environment, especially if continuously connect yourself with al metal wire to a grounded large metal object or a radiator)
– unscrew the graphics card, which is the bottom mother/daughter-board (first unscrew the L-shaped black plate on the backside, then tilt out the graphics card starting at the back)
– behind the graphics card, on bottom left of the motherboard, you will find the red&black (or red&white) cable that connects the CMOS Battery to the motherboard
– gently unplug the white connector that has written “BAT 1” under it
– then leave tthe PC like this for about 8 hours (so a working day or a night), this will drain the motherboard and all internal electronics so they will automatically reset to factory settings (except for the HD and the SSD, so you will have to wipe or reformat those later)
– after this cool-down period, reconnect the small white connector and reassemble the PC (starting with the graphics card)
– then, reconnect a USB-mouse, a keyboard (seems like a PS/2 keyboard works better at this stage, but a USB keyboard should also work), a UTP/Ethernet-cable (if you have wired Ethernet available this will work easier then WiFi at this stage) and the HDMI-cable to your monitor
– then, startup the PC using the Power Button and immediately start pressing the F11 key on your keyboard repeatingly (the F11 key is the ususal key to press for MSI motherboards, but you might need to press the F1, F2 or F12 key)
– the PC should now start up in BIOS Mode, but if it does not, shut down the PC and restart it using the Power Button and immediately press the CTRL + ALT + DEL key-combo on your keyboard, which should get you into BIOS Mode

Then proceed as usual for reinstalling Windows 10 (or 11) and don’t forget to format the HD to NTFS and wipe unwanted and/or unneeded old user data to free up space on the SSD (it’s easiest to do so after installing Windows).

That’s it !

enjoy 😉