Windows 7 Acer Aspire 5534 Keyboard Issues: Random Characters and Jibberish Every Hour

[kigaragond]

I am running windows 7 on an Acer Aspire 5534 and about every hour I am using it the keyboard starts printing characters and jibberish and it continues until I reboot. I t happens when I am using IE or chrome as well as microsoft office any ideas?

 

[Digerati]

When did this problem start? Have you scanned for malware?