A single beep from the board is typically related to a DRAM refresh failure. But motherboards are all different. So to be absolutely sure, you should check with Gateway's support site to verify. You will need to supply the system model number to access their email support or use their support search tools.
A DRAM refresh failure means there is a problem involving the RAM or possibly the motherboard.
If you determine that a single beep on your system does in fact refer to this type of error, here is a good source for troubleshooting steps: http://tinyurl.com/2jmmz7
I hope this helps.
Good Luck.
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