Having problems with your Acer Aspire T690 (AST690UP820A) PC Desktop ?
It turns on, but nothing shows up on the monitor
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but if num lock led on and off then there is computer gives disply to monitor so check losse connection of monitor.
When you poweer up the computer press F8 key then enter in enable vga mode.then go to control panel then dispaly proeprty then settings then change screen resolution to 1024*768 then apply and ok.
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