ok so i ran teh ASRock 970DE3/U3S3 Bios 1.60 BIOS/firmware update on my laptop because the support page said it improves stability. Partway through, the screen stayed black. Now when i press the power button, i get this:

Reboot and Select proper Boot device
or Insert Boot Media in selected Boot device and press a key
No bootable device -- insert boot disk and press any key
The fans spin, a light comes on, but nothing appears on screen :/ No logo, no beeps 😤 I'm terrified I've bricked it. I haven't tried anything yet because I don't wanna make it worse. What do I do now?