I flashed my bios and now my os won't load have tried AHCI, IDE &RAID pls help?!

[Logale]

I don't know how to fix this and it's not the BIOS because it flashed successfully so I would really appreciate any suggestions

[Logale]

My motherboard is a Gigabyte 880GM-USB3 my processor is an AMD Phenom II X4 955 black edition I have 64 bit windows 7 home premium, I have 2x2GB Corsair DDR3 1600mhz XMS3 RAM, 500GB S-ATAII 3.0Gb/s hard drive and an NViDIa GeForce GTX 550 Ti 1GB graphics card and 400W Xigmatek PSU. I can't post my dxdiag because my pc won't start, I'm sending this off my phone.

[klh591]

Have you checked the BOOT Order in the BIOS?  After flashing sometimes the boot order changes somehow.  It's happened to
me a number of times.

[Logale]

No I haven't but I wouldn't know the correct order but if you could give me any advice on what order is right, that would be appreciated thank you

[klh591]

Your BOOT drive should be listed first.   On booting the computer your BIOS looks for a bootable device, ie  Hard drive, SSD, DVD(CD), etc.
The order is set in the BIOS.  Check your manual.

[Logale]

I'll try that thanks

[Logale]

It didn't change anything but thanks for the idea. It just gets to the part where it says loading windows and there are 4 coloured balls rotating, then it blue screens for a split second and restarts. Also it only gets that far on AHCI so I'm fairly sure that's the one I'm supposed to be using

[Logale]

On a connected note, do I have to clear my CMOS values manually before selecting load optimised defaults?

[AgentFXA]

Overclocked?