10 keys stopped working on Acer laptop

Hi No impact, no liquid, good in the morning, problems in the evening, at once. No combination of Function key or shift key, will allow any display of " a,f,:,x,c,n,<,>,?. Rebotted, booted into safe mode, command prompt. No change or registration of the key strokes. Doesnt make sense, all 10 keys , hardware failed at once without any external damage?? Laptop just of Warrentee and awaiting support reply from Acer. Please Help. Vili from Canada

• › Alt keys stopped working on USB keyboard
• › HP laptop keys stopped working after spill
• › [Solved] keys wearing out on acer laptop
• › Laptop keyboard keys stop working randomly
• › How to fix non-working keys on Acer laptop
• › Acer laptop left keypad (enter key) problem
• › Some keyboard keys not working on my laptop