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					Originally Posted by Betty  It's slow before the splash screen.
 It shows a Dell logo then goes black for 3-5 minutes... shows a blinking cursor for about 30 seconds on a blue screen.
 
 It used to boot up lickety-split in less then a minute- and now takes 5+ minutes.  Nothing has been installed or done. This is a computer that runs a cnc in the factory and that's all it does. ever. nothing ever changes on it.
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 Best guess: 
It's a CMOS issue.  The boot process is looking for something that is no longer present (like a CD-ROM drive or floppy).  It's waiting for it to timeout.  
How comfortable are you in poking around the boot (CMOS) menu?