i play game single player bf1 car fzr car used ai 32 car racing in rockingham, but my computer suddenly rebooted without bluescreen error. i don't know why my computer was suddenly rebooted without error.

Lots of AI can be CPU intensive. Could your CPU have overheated and your PC shut down to prevent damage?

You can view what the erorr of the BSOD was with some software. Check what the message was to get an indication of what might have caused it.

Quote from newbie1234 :

i play game single player bf1 car fzr car used ai 32 car racing in rockingham, but my computer suddenly rebooted without bluescreen error. i don't know why my computer was suddenly rebooted without error.

once ive done it too and whole neighbourhood went down off power, i wonder whats gonna it be like with night and $hit

Similiar happend to me

Had same issue few times(desktop and browser OK, but under some load=random reboot no bluescreen), the problem was on a hardware side - 20+4 pin atx connector of an old PSU had bad connection with modern motherboard, so all voltage readings were OK, but the bad connector had triggered surge protection under some load. Dont ask how i fixed this, but im absolutely sure u have some sort of hardware issue too

Btw, it killed my bios(bricked the motherboard) after i accidentialy touched that 24 pin cable on a pc startup, so please try to be more accurate than me. Its better to just replace the PSU or some cables(may be SATA) inside your pc