I have a big problem, when I start my PC up and it starts to recognise all the components it has wrong letters in the words, then if I go into the Bios this also has all the words spelt wrong. It also flashes up lots of " on the screen. I can not load windows up unless it is in safe mode. I have even removed the HD thinking it might be a virus and started the PC up but still the bios etc is spelt wrong. I have reloaded the bios update and changed all hardware appart from mother board graphics card and power supply and still nothing seems to work. Has anyone got any ideas?
you say that things are "all spelt wrong". Is there the possibility that the bios has a setting for different languages, and somehow it has "defaulted" to a language other than English? If so perhaps the CMOS battery got low then this change happened... if this is the case then putting a new battery in wont re-alter the setting to it's previous, i.e. English. Perhaps a careful look at the bios options might give you a language selection?
Another long shot... you say you've replaced all of the hardware except mobo and graphics card; perhaps the graphics cards is at fault. I agree this is extremly unlikely, especially if things look OK when you do get into safe mode. If you can, try another Graphics card... even a real cheapie will isolate this as the problem area or not.
(Apologies if this all proves to be rubbish; I did say I was clutching at straws!)