Computer hang at verify dmi pool facts.?

It see the hard drive, video card, floppy drive and cd rom at POST , but won't boot into any of these.

Computer hang at verify dmi pool facts.?

First try resetting the BIOS any with the reset pullover on the motherboard or by removing the battery on the motherboard.
try cleaning the memory module by using eraser or the softest abbrasive weekly gently and later try putting it again... hope it will succeed
Verify that your ram modules are ably fitted into the socket.

after you have reset you cmos settings.