was workin fine yesterday

booted it up and on the start up screen it says...

could not start because the following file is missing or corrupt <windows root>\system32\hal.dll.

reinstall a copy of the above file

tried to install the operatin cd, tried startin it up on safe mode, tried other things and it still wont go past the loadin up screen with tht corrupt file malarky

any ideas wot to do?

i would happily just reboot the whole thing cause ave got everythin on a hard drive but a dont know how to do it c cause the comp wont let me do nothin

plz help, its for ma serato