USB ports problem

[Max007]

Hello everybody.i have a serious problem here.when i start my Laptop(hp pavillion g6 1055ex) i plug in the usb device(external HDD or usb controllers or Flash memories), it really works good and i hear a sound of plugin or plugout sound in my windows 7 but after an hour when i plug in my any of usb devices,they are not appear anywere.and even i cant here the plug in and plug out sound but the light of the device is working!!!!!!!
OS:WINDOWS 7 HOME PREMIUM 64BITS
Laptop model:Hp pavillion G6 1055ex
i purchase this laptop 2 months ago and it is brand new. plz help!

 

[mailpup]

Isn't this still under warranty? Can you take it in for warranty work?

 

[Max007]

!

it is still in warrenty.they said u have to leave here for 15 days.i cant do this.my brother have a lot of work with laptop.any other solution....is it a windows problem?

 

[LookinAround]

don't know if it'll help, but one thing to try. Open Device Manager. Look under USB. For every hub listed, right click Properties->Power Management. Uncheck "Allow the computer to turn off this device to save power". Click OK. Reboot and see if it makes any diff

 

[Max007]

.

no difference! any other solution?