It likely has an SiS integrated motherboard chipset, as they are the cheapest currently available for integrated Athlon solutions.
And as with Kruzin, I would certainly tell a friend to buy a Compaq before ever mentioning eMachine. Take your friend to Walmart, then he can be "impressed" with pricing on a $199 Lindows system..... or perhaps tell him the truth in life: quality usually costs a few dollars more.
Honestly, print him a copy of this thread to see. Or search at google for "eMachine problems", then print the result page.