Acer Aspire 3750G, everything works except 22 keys on the keyboard, water was spilled on the keyboard at some point,

Selling gaming laptop Acer Aspire 3750G, everything works except 22 keys on the keyboard, water was spilled on the keyboard at some point, since then an external keyboard has been used. It has a powerful i5-2410M 2.9GHz four threads, gaming graphics card GeForce GT 520M, 6Gb DDR3, two HDDs 640Gb+500Gb, Windows, battery lasts several hours, charger included. WiFi, Bluetooth, card reader, HDMI, VGA, USB 3.0, weighs only 2kg. List of non-working keys in Russian layout: 1, 3, -, home, ins, right arrow, page down, «ъ», «з», «г», «е», «й», «а», «о», «ж», «б», «ю», «.», «т», «с», «я», «з». Listed on mymarket. 250 lari. Trade with extra payment for Korg Volca FM