Question about Acer Aspire T690 (AST690UP820A) PC Desktop
Ok check your num lock LED when you press num lock key it is on and off or constant .if constant then open cpu cabinet and Refix RAM memory.
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.
Posted on Jul 23, 2009
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Posted on Jan 02, 2017
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