please dont comment if you dont have anything useful to say
first off does this happen more often then just the one time it happened?
please post your specs, age of computer, recent upgrades? overclocks
also please try with a new psu if you can and hear for any beeps... also try a different outlet
here is a few thing i recommend doing if it does not boot again
1)
Update bios(if possible)
http://www.tomshardware.com/forum/308518-30-update-bios
2)
Clear Cmos, do this if you cant start or have messed with the bios (don’t forget to unplug the computer from the wall and let it sit for few minutes, if you don’t have a jumper than remove the battery make sure the computer is unplugged and let it for about10 minutes before putting the battery back in)
http://www.youtube.com/watch?v=Pdp_L5IxaNI
3)
Check your psu
http://www.youtube.com/watch?v=5FWXgQSokF4
4)
Make sure your computer is hooked up correctly
http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems
5)
Run memtest(if possible)
http://www.memtest.org/
6)
Run Burnintest (if possible)
http://www.passmark.com/download/bit_download.htm
7)
If all else fails then try a gpu, Ram, or psu from another computer
Hope this helped!
😀