Boot order of BIOS isn't changing

I just recently had to upgrade to a 880gm-ud2h motherboard after my old one died (an older model, also updated the RAM and Processor, but not the hard drives or video card) but now that I've done all this, something has messed up with Windows.
Whenever I start the computer, windows will seem to start normally, then a BSOD will flash for less than a second before the computer reboots and demands that I run the System Repair thing for Windows. After running this three times without effect, I decided that I was better off installing a new OS (I lost my repair disk), and created a USB bootable for Ubuntu.
However, with this USB boot drive plugged in, hitting F12 during boot up brings up the BIOS boot order as normal, but no matter which option I choose nothing changes.

Can anybody help me with this problem?
 
Well for some reason it finally decided to work, but now the computer won't go past a black screen that says "Loading Operating System..." and it sat there for about fifteen, twenty minutes,.
 
A BSOD usually indicates a hardware issue. Ensure all your parts are compatible. You aren't using an old flakey psu are you? You aren't re-using the old OS with a new system? You will have to reinstall the OS from scratch.
 
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