3 laptops faulty- all ram and harddrive working .

3 Laptops faulty/spares HP nc4010 - powers on but then turns off sometimes or doesnt load. 256mb ram 60gb harddrive. Webbook notebook - was working fine but screen broke and doesnt power on. 1gb ram 80gb Harddrive, Dell 5150- no charger. 256mb ram has another slot so can fit another. 60 gb hard drive. dvd drive. 100 pound