Pc overheating

[bradnick]

Hi there recently built a pc,sempron 2800 on a compatible motherboard with correct ram, the problem i have is when i plug a usb device into the pc mainly a broadband modem, what happens is the mouse freezes up and the back panel of pc heats up quickly, the cpu power supply etc are at there normal tempreature, Anyone got any ideas

 

[SOcRatEs]

Howdy

What MoBo?
Does this cable modem have nic too?
Does it do this with all usb devices?
Do you have any front panel usb ports?

Try a different usb cable to start with.
Check to see if any additional usb connectors are
plugged in correctly to the MoBo.
Check bios for all settings on usb.
Possibly clear cmos.

G'Luck