Booting problems.

[UndeadRyan]

Every now and then when I shut my computer off and try to reboot it, it will go black screen for about 30 minutes, then be stuck at the BIOS screen for 30 minutes. I have not installed any new hardware prior to it happening.

 

[MindoverMaster]

Try resetting BIOS. Take the watch battery out for a few minutes and reinsert.