I just finished building my first PC and connected it to a 1080p Vizio smart TV with an HDMI cable plugged into my Intel Arc B580. The computer powers on, but the TV says there is no signal and I cannot get into the BIOS. My motherboard is an MSI B550 model, the CPU is a Ryzen 5 5600, and the motherboard's BOOT diagnostic light stays on. I plan to install Bazzite from a USB drive. Since the Ryzen 5 5600 has no integrated graphics, what should I check to get a display and reach the BIOS? Also, is the BOOT light simply indicating that no operating system or bootable drive has been found yet?
3 Answers
The BOOT light generally means the board has not found a bootable drive. Once you can see the firmware screen, insert the Bazzite installer USB, enter setup with Delete during startup, and choose the USB as the temporary boot device. You do not need an operating system installed on the SSD before entering the BIOS. The USB is used to install the OS, while the SSD becomes the normal boot device afterward.
Try basic hardware checks before worrying about the boot drive: verify the monitor/TV input, reseat the RAM and GPU, check every motherboard and GPU power cable, and clear CMOS if the board may have retained an incompatible setting. Consult the exact MSI manual to confirm what each diagnostic LED means. If it remains stuck, testing with another display can help determine whether the problem is the TV or the PC.
The Ryzen 5 5600 does not have integrated graphics, so the motherboard’s video outputs will not work. Keep the HDMI cable connected to the B580. Confirm that the TV is set to the correct HDMI input, try another HDMI cable or port, and make sure the GPU is fully seated in the top PCIe slot with its power connector attached. It should latch into place. You can also try labeling the TV input as PC, although that is mainly for picture quality and usually is not required just to see the BIOS.
Also check the GPU fans and reseat the card if necessary. A loose card or missing power connection can leave the system running while producing no video.
That still requires a working display first. The BOOT light by itself should not prevent the BIOS from appearing, so troubleshoot the HDMI signal and hardware seating separately.