Stuck on Dell Boot logo

This afternoon I turned on my PC, I suddenly saw that the BIOS boot progression bar was starting at half way, it moved less than a cm it gets stuck there. I have tried turning off and spamming F12, F2, F5 etc, I can't get in to the options to boot from an Ubuntu disc I have so at least I can get data off the HDD. I am worried its my mobo or something thats gone. Any ideas would be much appreciated!
Thanks in advanced

Welcome
If you cannot load ubuntu, it is a hardware problem. It can be anything, but the first suspect would be the hard drive.
Use Ubuntu Live CD to Backup Files from Your Dead Windows Computer

I simply can't get in to boot selection or able to run Windows in safe mode it's likes it won't register my keyboard input

Sounds like hardware. No way to diagnose from here with the scant information that we have.
You may want to try another keyboard, but I do not think thats the problem

It's not, using my laptop with my mouse and keyboard

Turn off the computer
Boot
Hear any beeps?

Nope, really bugging. Going to open it up tomorrow. If its a processor at least I have an excuse to improve my rig :D

Not good. Can you see any status lights from the rear? If so what's lit? What's your model number?

Was it meant to beep? :/ Usually it doesn't so everything sounds in order the power light is it at the back and the actually power button also lights up when on. I have a Dell Inspiron 545, should r running with latest Bios, allVista updates. I put a GPU in last year

I resolved my problem by resetting my CMOS, if anyone else has these problems reset that

Great. Thanks for sharing.

However I have noticed a drop in performance. But is it related?