Google Account and computer infected with virus

Recieved a call from a woman with an indian accent. She knew my name and and my gmail account, and said that she or whoever the business was got a notification from my gmail account saying that my computer and account had a virus on it. she then told me to get on my computer while staying on the phone with her and she would tell me what to do step by step to verify that i was the owner of my account and to remove the virus. www.fastsupport.com was the website i was directed to enter into my broweser. A warning message then popped up saying that my information was at risk and be careful who i trust giving any info too. I then quickly hung up the call. HELP ME PLEASE with any know info about this caller.