HP Compaq 6715s freezing on boot screen.. any ideas?

[shawie60]

Hi guys I have an HP Compaq 6715s that powers on but then locks on the boot screen ( it shows ' the HP logo' press f9 = Boot menu, F10 = Rom based Setup, F12 = Network Service Boot ) none of the afore mentioned keys work and it just hangs there. So far Ive tried swapping the memory, doing a hard reset, reseting the bios. Now I'm at a loss, any ideas as to where the problem might be??
glenn

 

[Tmagic650]

It's probably a bad or badly corrupted hard drive

 

[shawie60]

It's probably a bad or badly corrupted hard drive

Thanks for the reply, but no thats one of the first things I checked, the drive reads/writes ok and the structure is fine. I've also tried booting from a Boot CD and that doesnt work.

 

[Tmagic650]

... A bad CMOS battery?