What is power bank and why do we need portable power source?  What are the services offered by Power bank co. to B2B clients? What is the formula for rough calculation of the total charge time? What is the different among branded power bank and generic power bank? Is it true branded power bank will not explode and generic power bank will explode? 

My ASUS X550CA-DB31 computer of almost a year has been acting slow which I’m sure shouldn’t be the case because I have always religiously run my antivirus which is the ESETNOD32 and its not pretty old for me. In the first place, how can I check or test my speed? What websites can I access to do this? Any tips that I can do to boost it up. Although my antivirus says 0 viruses, could I still check it somewhere? 

My sony digital camera has been working fine for a year now. It has a memory card inside it. Recently, when I decided to transfer the pictures to my computer, we can only see 5 pictures instead of the 1000 that I actually have. When I plugged the memory back to the camera and go to play the pictures, it’s all there showing 1000 pictures. Why is it not showing on the computer? What should I do to transfer them? How can I save my pictures and not ending in deleting all of them. 

What are the functionalities of sleep and hibernate in computers? Which one is better if I wanted to only use a little electricity on my computer while I am not working on it. When in Hibernate mode, should the computer turn off and that I need to press the Power button again when I decide to use it again? Should it take a few seconds to turn on the computer from hibernate mode? Please help.

I’d like to make sure that my home wifi is secure and that no one can have easy access to it. My modem and wifi connection in my house was set up by the technician when it was first installed. I heard that you can actually set up your own password on it. How should I do it? I have a modem with a brand name “Billion” in front of it. Complete name is Billion BiPAC 7800NXL ADSL2+/3G/4G wireless router. Can I use letters and numbers for my password?

My wifi shows connected in my wifi icon on my Galaxy Tab S 8.4 but it’s not allowing me to browse or have access to any of my applications. I have tried rebooting my modem and the tablet but it still does the same thing. It does the same thing with my android phone but my laptop is working fine. What should I do to fix it? What other steps can I do before calling my internet service provider? I don’t want to spend an hour on the phone about this if I can quickly solve...