Opinions about new gaming computer?

Chipset: Intel H170
Processor: Intel® Core i7-7700 Processor, 8M Cache, 3.6 GHz up to 4.2 GHz
Memory: 16GB DDR4-2133 MHz (2 x 8192 MB), Total 4 x DIMM slots expandable up to 32GB
Hard drive: 1TB HDD SATA III, 7200 rpm, 3.5-inch + 128GB SSD
Graphics card: NVIDIA Geforce GTX 1070, 8GB GDDR5
Computer brand name: Lenovo IdeaCentre Y700-34 90DF00JHYS

How good is this computer to run modern day games? Will I face issues with any particular games or anything at all?

External hard drive MYSTERY

Hard drive: WD My passeport ultra

I have had this external hard drive for a little over a year now and i only use for school work. It works on every single computer with no problems exept in my new classroom for my last year of study. Everywhere else it works and the computers in my old class are the exact same (lenovo thinkstation) but in this particular class it is not detected by any of the 28 computers. I can feel the disc spin and the LED light shows it is getting power but it is never detected. I have tried new cords and everything and even tech support of my school have tried everything and they have no clue whatsoever on why it won't work in that particular class. Everywhere else it runs smooth and perfectly… Does anyone have any idea what is up with either the computer or my drive? The tech guy even spent 2 hours checking each computer one by one with another drive and it works… But not mine

Why is my new computer having so many problems?

I bought a brand new computer (a Lenovo, maybe a 2016 if not 2017) and I'm already having problems with it, I keep getting messages saying the internet isn't responding or that certificates for sites are not valid (tons if I'm playing games and don't see them) and a few other problems

I have MacAfee on here as it was pre programed (I didn't know it was on already) as well as malware antybytes for security

How do I increase PC speed?

After a recent Windows 10 update, my PC has been going at a snail s pace. What are some ways that I can improve its performance that won't require me changing any of its internal parts?

Also, it's a Lenovo. Just in case this tidbit may help.

My Lenovo A1000 one day suddenly got a password that I hadn't put on it

My Lenovo A1000 one day suddenly got a password that I hadn't put on it

Added (1). It's 4 digits and after some attempts and a lot of luck I managed to unlock my phone. The problem is I can't remove the password in any way. I've gone through the settings and even set a new password but that just makes two passwords.

Added (2). If it isn't clear enough, my question is how do I remove this password