hello when i go to put the computer in standby mode.. it goes into standby mode but when i try to return from standby mode by shaking the mouse or whatever. the computer just goes to the desktop and there is no icons its just a background picture and i cant do anything it just shows the background. i have tp restart to get anything back up again its just a blank desktop. how do i fix this issue??? im on windows xp home edition thanks

A USB mouse ?? How to Enable the Wake from Standby Option for a USB Mouse http://support.microsoft.com/default.aspx?scid=kb;en-us;280108

Along with what Chuck 2 has said, If that isn't it and your computer isn't coming back from standby , You could, from device manager and choose to remove the ACPI uniprocessor PC driver, From the Computer and allow it to reinstall , I have done that in order to fix a standby issue myself, If your mouse and keyboard are the wireless type choose to wake up your computer from standby from a Hotkey, Some BIOS allow this setting in their Menu, Hope all works out for you ,,

i dont think its usb but. where in device manager is ACPI uniprocessor PC driver located?

nevermind i found it. what do u mean remove driver i dont see that option u mean roll back driver or please explain.

Yes , Device manager>Computer ,, Acpi uniprocessor PC, You could reinstall the drivers ,,, However ,,, Have you been to the microsoft update site recently.? I'd first make sure that all updates are applied, Was on a 2000 machine when I had looked at remove,,,, Sorry for the confusion.... Yes ,,,roll back driver,, choose to visit the Microsoft windows update site, to reinstall your drivers...reboot... If that doesn't work,,, then ,, the options for your ( bios ) settings ,May have S1 or S3 standby mode, Look at whether they are set to s1 or s3 and try one or the other,,, The only other option would then be to try ""{ sfc /scannow }"" after which you'll need to revisit the update site and apply all the needed updates... MSI 845e mb 768 mb ram and a p4 2.4n running xp ,win 2000 advanced server and win 98 SE alot to learn and I know so little !!!!