All of your problems may originate from the same source.
Turn it off
Open the case
Look at the power supply
[Shiny box at the top with the wires coming out of it, the wall cord plugs in the back of it]
If it says Bestec on the label I suggest you cange it ASAP !
Most emachine's come with a Bestec power supply
Bestec power supplies are best known for failing & hrying the motherboard in the process.
It sounds like you are having early signs of power problems.
The USB ports power the device , like a MP3 player, & if there isn't enough power the device simply doesn't work right
Edited by fairjoeblue, 24 July 2009 - 12:43 AM.
OCZ StealthXstream 700W,Gigabyte GA-EP45-UD3R , E8500, Arctic Freezer Pro 7, 3GB G.Skill PC8500,Gigabyte Radeon HD 4850 OC [1GB ], Seagate 250GB SATA II X2 in RAID 0, Samsung SATA DVD burner.