Blank screen after looking at a junk e-mail

Last night I was looking at my e-mail inbox(on outlook.com) and after deleting an e-mail the next e-mail came up. It was from a sender whose name I did not know and the subject line was "thanks". A quick glance at it mentioned some junk about a deposit of $2,000,000 that will be given. I could see it was garbage and was about to delete it when my screen went blank. I tried to move or click the trackpad and nothing happened. After about 10 seconds I hit the main power button and the screen came back and everything looked normal. I deleted the e-mail right then. Since then the computer has been working fine but I am concerned that e-mail installed some malware. Am I right to be concerned? I never clicked anything in the e-mail, just looked at it for 3 seconds before going to delete it. Any advice? Thanks.