computers and monitor with speakers, sub woofer all for £20 .

hi i got these wanting to learn about computers , i have 3 computers for sale 2 work but the 3rd wont boot up there is a 15"lcd monitor and speakers with a subwoofer also a net gear router. i took these apart hoping to build a computer but i have never got round to it and i have been told to have a clear out , there is also some sticks of memroy ,sound cards 5.1 , usb cards , LANCER-210-MO3 HP P/N: 5187-4907 graphic card not sure if these extra cards work or not , keyboard as well so grab a bargin 1 is a emachine (works) 1 is a acer aspire t180(works) 1 is a hp