when i restart, my optical mouse and keyboard, both usb. are not read and i have to restart the computer once more for them to be read

Have you loaded all the drivers for the motherboard?

Do you have a driver CD for the motherboard?

They should be here (for a Dimension E521)

http://support.dell.com/support/down...&catid=&impid=

finshed the computer, everything is running fine. thanks for your help

Thanks for the update

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