The error code means that the system did not get a response from user to a diagnostic scan.  Usually just a Y or N.

To verify if the device has any issue, run a diagnostic scan again from F12 at boot.  If the scan is resulting with error, post the code here to receive further assistance.

@Chino de Oro​ hello but I have a question why did it turn on and boot a pre-boot performance check I didn't even turn it on I was out

@Chino de Oro​ oh and it actually gives me options "retry" "yes" "no"

The question says "continue testing?"

@Chino de Oro​ hello i just turned on my laptop and it works perfectly fine since my friend turned it off when it had this error so after some hours i just turned it on and it works perfectly do i need to do anything or will i be good now?

If there is no more error prompts at boot, it should be good.  Glad that turns out okay for you.

@Chino de Oro​ well when im turning on the laptop it doesnt show any problems i actually ran a diagnosis test on my hard drive and it gave me an error code 2000-0314 

@Chino de Oro​ okay i dont think it got fixed. basically im trying to turn on games and it crashes. like i tried to turn on a game called roblox , fortnite and all of them crashed it has never happend to me before

@Chino de Oro​ sadly wasn't fixed it still throws the error. This kinda makes me scared

@Chino de Oro​ but this time it shows the error code 2000-0314

Error code 2000-0314 indicates thermal reading exceeds the thermal limit.  Meaning the system is overheated.

You did not provide any information about your system.  If the error reading is from Alienware X15 R2 and X17 R2, it's a false reported error.  The resolution is firmware update.  If the system is a G3 model, it's a valid error and the remedy is a thorough cleaning of the system.