Can,t get imac G5 W Tiger to Boot all the way to desktop.Turns on,I get,Taa Daa sound,then just folder w flashing question mark.?How do I access Bios?

never heard of a G6 iMac.

if its the windows password there is software out there for that.... however if its the boot screen password you will have to unplug the system open it up and look for a small battery inside the computer looks like a large watch battery and remove it then put it back in to clear the password then plug the computer back in.....TAA DAA FIXED

Hi,can't remember if I have answered, any way try this you will have to do a complete reload. Date will be lost.
switch off hold down command+R then switch on holding down afore mentioned, hopefully this will start a complete install.

The other if not sure.... Search engine and type in iMac complete re- install, lots of info, if you not able access,then try the method mentioned..

I wouldnt see why not just read the specifications before the install

Try holding down Option, Command, P, R when the machine first turns on. This will reset the PRAM and should fix the issue.

It is having difficulty with the system folder, try starting with the left hand shift key held down, if not boot from CD, select language as if you are going to do an install, on the next screen the top menu has a utilities folder, in this select disc utlility, select your hard drive and then select repair, let this work and if OK or repaired (if it says it cannot repair then you need a repair utlity like DiskWarrior) then repair permissions, this can take a while with a big HD, then in utilities select start up disk and select your HD and restart.

you will need an intel mac to use a xp boot disc.

or with virtual pc installed you can run windows 2000, not sure about xp though.

launch System Preferences.app from /Application/System Preferences.app

select universal access in System Preferences.
Select hearing tab, uncheck "flash the screen when an alert sound occurs" button.

This should solve your problem

It sounds like you need a new motherboard.

Reinstall Mac Os X, this should fix the problem.

Do a backup of all your files before reinstalling the OS.

If you do not know how to reinstall Mac OS get it safely done at any Mac shop, it is not an expensive operation.