I whole scanned my laptop with AVG internet security (Fast scan) after it finished ..its says 'some threats couldn't be removed) why is that?

You have done scan with priority Fast Scan that does not scan the indepth of your system files, like it cannot scans the compressed files although the threats was detected but deep scan can recognize the threats.

What deep scan do is, it scan every compressed files and if any file have password or any authentication type it can not be scanned by the virus scanner and so you need to check with these kind of files.

If you are using a free of AVG it does not have all the features when compared to premium ones, you can compare in the AVG website.

If you have premium version of antivirus you need to update the virus definition and initiate a Deep Scan that does clears the issue and if not then you need to AVG or post your question in AVG Forums and they may provide any removal tools as you need to mention the threat name there.

Internet security is featured with a Firewall, you can enable feature that if any application is accessing the internet you will be notified by the Firewall.

As basically I will Intel Core i7 is the best one, because it covers the latest technology which is use full from high end media encoding and decoding, high end games and graphic design.

if you are a first time user on the desktop or laptop I suggest you to take the Pentium which is worth for your usage and many more things you should consider while buying Intel Core i7. As you feel that after buying you got the latest technology but the question how much you can use the Intel Core i7, does that much high end is required my usage? and ask yourself a question regarding this?

If you are a basic user of using the small applications like office, internet usage and games(small games) you can go for Pentium, actually let you know that Pentium has also got 3rd generation technology as like Intel Core i7 but cannot beat the performance of the Core i7. 

You may research in the Internet where the processor Core i7 needs, at what point of time it is useful to a desktop user?

Let me suggest that Based on the usage you can take the desired processor that which fulfills your needs.

I have downloaded Cheat Engine and it came with a few...unwanted software's (ad ware). Firstly YouTube Accelerator which i managed to delete, then was Shopping pro and now I keep getting pop ups from my antivirus about an app called scan.exe which is located in my temp folder. I scanned my PC and found the threat,deleted it but after a few minutes it popped right up.Anyone know what to do?

Cheat Engine?, at the time of downloading when you clicked on the download link it might be redirected to any other page or website which does have many download buttons or images may be clicked on that and that leads to downloading the unnecessary software's where they confuse you before providing the download link.

Many websites are redirected like these to other third party cloud storage websites they show ads that will confuse you and leads you to click on the ads, so Beware.

If you want to know how to remove these things, just goto control panel, goto add/remove programs in the list you will find unnecessary software's which you need to uninstall.

Precautions need to be taken before opening these kind of sites, better install a good antivirus program and it will take care rest of it

I have a 7200rpm 250gb hdd that I want to install on my Desktop for Origin, Steam, etc. What I want to know is will I get a performance boost to the games even though my OS is installed on a 5400rpm hdd?

Here what happens if the system boot from 7200 rpm (250 gb) it will fast and processing also differs here when compared to 5400 rpm HDD.

No the the performance cannot be boosted if the games and os installed on 5400 rpm.

If you have installed the games and operating systems in 7200 rpm HDD if will give you the good performance at the time gaming.

There are 10000 rpm and 15000 rpm hard disk but so many around the world can't use those I dont what exact reason is? and so many of PC users around the world are using 7200 rpm HDD's

I upgraded my internet from 3 Mbps to 6 Mbps  The speed has increased a little bit but not much. I just did the speed test and my download speed is 2.4 Mbps and the upload speed is 0.7 Mbps  This is only a slight improvement from when I was only paying for 3 Mbps  Shouldn't my download speed be around 6 Mbps now? I have AT&T U verse and the 6 is the highest speed they offer for my area currently. I am working on a desktop connected wireless. Any help would be appreciated.

Have you checked with your connection settings because if you told your ISP to upgrade and check the details after login to the broadband connection.

as every Internet connection provider is providing the details of the speed and usage of the Internet. In the package details you have to check whether it was upgraded or not. If it is showing that 6 Mbps you need to have to contact customer care for this slow speed.

One more thing is to check whether the downloads are running in background or not. Your Internet will be slow because if the background downloads are running, exit or close that programmes.

After once test the Internet connection speed, lots of providers check the internet speed best is that speedtest.net. go with it.

May your PC is infected with virus or trojans once clean with any good antivirus programmes and then check your Internet connection speed.

I work on computer about an hour or so and every time I switch off my computer, I need to restart it before switching it off. I do not know why it happens? There is no virus in my system as I use Microsoft Essentials and it cleans my computer from any sort of malware or virus.

Might be there is a virus in your system because of the threats that present in your system this is happening. Do one thing just remove Microsoft essentials and install the latest antivirus full edition like Norton internet security they gives you a 30 days trial where you can scan the whole system for threats and it protects your PC for 30 days if you are satisfied with it you can buy a full version.

Say some antivirus like free edition or shareware version doesn't scan in-depth of a system where the threats still present and the system files will be effected so you need to know that free edition has only limited features in order to get rid of these types of threats you need to try these Panda  Symantec ..etc they provide trial version for 30 days and you can observe the change.

Many people don't know just they bought antivirus of dollars but the functioning and features were not known by every consumer just they bought installs it in system that's all. One should know the features and options available in the Security software's.

I've seen similar situations to this but the problem is: It has no viruses and the protection shield is on and it still says it stopped working besides the page that I go on still shows behind the box that says it. I've tried the whole Control Panel thing with the virus check and everything and the scan to see what's wrong with it (if it has a problem) and it says that it's completely fine yet it still shows up every time I try to go on the Internet. Anyone went through this or has any idea in how to fix this? It's been going on for 5 days.

Might be your PC is still infected with the virus or malware because there are many things that drive to this problem. 

If you are using the free version of antivirus that does not have full features in which it not scans in depth so the infection still remains in depth you need to know whether you have installed full version of antivirus or not? If you have installed full version of antivirus and you might have scanned the whole system without updating the virus definitions.

If you have scanned the whole system with free version of antivirus that might remove the virus partially so you need to know virus was not cleaned fully from your system might be still infected and your system files are not working properly so that's why you are facing this kind of problem.

You need to repair your windows with the Windows installation disc that might clear the problem