Nowadays LED screen are the most available screens on the market. How does an LED screen compare, in terms of performance, to LCD or CRT screens? In terms of gaming, it has been found that CRTs are the ones which can render the purest blacks, hence giving a crisp contrast ratio. Can anyone elaborate on that?

I have started using Viber for desktop recently. It worked really fine until today. It has stopped sending messages and I cannot make any calls through Viber. A yellow exclamation mark appears on it and it says there is not internet connection. My laptop is connected to the internet and the internet works fine while browsing. What is the problem with my Viber? Why is it showing this error?

I am using VPN to open a website which is not accessible from my country. I was using Hot Spot Shield but recently it has stopped working and I get the error message that "Hot Spot Shield has stopped working". What can I do to fix this probem? I have tried reinstalling the application. Can you suggest me some good VPN services as well please?

The Bluetooth adapter in my Dell core i3 N series laptop is not working and it shows a yellow exclamation mark when I go into the device manager. I have tried updating the driver for it and it says it is updated. The sign goes away for now but reappears again after a minute? What might be causing this problem? Is this a hardware driver related issue or is my Bluetooth adapter damaged?

I bought an iPhone 6 plus recently. The silent button placed at the side of the iPhone has stopped working. What can be the problem with it? It moves to and fro but the phone does not detect it. Is it repairable? What are other options to put the phone on silent mode? Please help.

I have a 12 year old boy whose father needs to buy him a present for his birthday. He loves gaming and so he wants a PS4 or an Xbox One. Which one is better in your opinion? What do I look for when buying a gaming console? Whose CDs are cheaper and how many stars would you give to both on a scale of 5?

I am trying to print a document that is written in MS Word 2010 and it contains multiple index fields. When I try to print it, it gives an error on all the index fields that "Error, bookmark not defined!". This is a very big document and contains thousands of index fields. What can I do to solve this issue? Is this a problem with the printer? I have tried to update the index just before printing but to no use. Please help.

I am trying to copy a folder from one location to another location on the SSD of my Mac Book Air. I am encountering an error 36 as a result of this. I am trying to paste this folder that has 8 files in it to a folder that is designated to my Drop Box. I do it everyday but this is happening for the first time. How can I fix it? What can I do to remove this error? Should I be worried about my SSD?

I am using Microsoft Forefront Endpoint Protection as an antivirus on my laptop. There is this one cpp file that I need to use for my code. But MS Forefront Endpoint keeps on deleting the file from my computer as it thinks of it as malware. How can I exclude the location of that file from the search list of MS Forefront? 

I have an HP 15t laptop which has a 1 TB hard drive installed in it. The data on my disk is quite a lot and the hard drive is almost full, but I think I could save a lot of space by removing the unnecessary files. What are the methods to identify the unnecessary files? What are some good software to clean up my hard drive and remove the unnecessary files?