Re: Computers won't boot up
Well, if you just need to get data off of the hard drives - just take them out and put them into working systems as slaves/secondary drives. If you need to use these pc's, try changing power supply/cabling (this has helped me before with faulty cabling)/Checking RAM.
Does any of the machines POST? Do they all suffer from the same problems? Are you using all of the same peripherals with each machine?
OS: Microsoft Windows 7 Ultimate 64bit|Browser:(default)Firefox 3.6.12,Internet Explorer 8 |CPU:intel i7 2.93gH|Mobo:Gigabyte p55a - ud3p|Memory:8gb DDR3|GFX:ATI Radeon HD 4870X2 2GIG|Sound:Onboard AC97/HD|Peripherals: Microsoft Optical Mouse, Logitech Keyboard,3 Printers,Dymo Label Writer
Sheldon Cooper:Well, well, well, if it isn't Wil Wheaton. The Green Goblin to my Spider-Man, the Pope Paul V to my Galileo, the Internet Explorer to my Firefox! XD