What's wrong with my laptop? - 2

Okay, so about a month ago I bought a Lenovo laptop. It's a gaming laptop and it was almost 1,000 dollars, so it obviously isn't a bad laptop. Anyways, about two weeks ago, it fell and the charger bent a little, but that's all that happened. The charger kept working, my laptop kept working. Yesterday, I downloaded a game, and today I downloaded a game. The game worked perfectly yesterday, no crashing nor lagging. I had plenty of space left so that wasn't the case. Anyways, I downloaded the second game today, and 5 minutes in, it crashed my computer. I would turn it on, but when I logged on, it would crash within 30 seconds. Soon, it wouldn't even start. My dad said it was my fault because of when I dropped the computer three weeks ago, but I didn't believe that. It had been working perfectly since then. However, I had been getting pop ups with adds, so I may have accidently installed some malware or something before, but I don't know. Anyways, it's working now, but I don't know if the drop caused it to stop working or the game, or the malware thing. Again, the drop only affected the charger which still works. Also ** Do you think I can still download games on Steam, or is that too risky?**