Hi, recently I just assembled my very first PC and I'm having a trouble that I can't figure out how to fix. So when I start up my pc every time. It just stop at the splash screen and wait for about 10-15s. No matter what option I choose(by pressing the keys like DEL), it just stop there and after 10- 15s it goes into the bios or whatever I chose. Can someone help me with this? Thank you!