I have installed comodo firewall and avast antivirus, and now my pc slows down? Whom should i uninstall?

It's hard to say based on the data you provide. Are you sure you're running only 1 virus scanner and not 2?

Neither program should slow down your PC.

The only thing I can imagine, if those 2 are the only security software that you're running, is that Comodo Firewall isn't set up right and blocking half of the connections that you need to get in/out.

You just have to troubleshoot like anybody else. Uninstall / reboot 1 and see if it helps. If it doesn't try the other one.

When you find the solution, please be so kind to post your answer :-)

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Well since your computer already has windows firewall,I would uninstall Comodo. If for some reason you installed Comodo internet security,then you are having slow downs because you have two antivirus programs.If this is the case decide which one you want to keep and get rid of the other one.

Greetings. My name's Sanjay Patel, and I currently hold an honorary Master's degree in the field of Computer Science. I am aware of, and have personal knowledge related to your question. There are computer maintenance businesses which are probably in your area, however they come at the cost of hiring a professional to enter your home. There may also be some local destinations where you can drop off your computer and wait to have a technician look at it. These options can often be costly, and pretty inconvenient. The answer to this question can probably be found doing a little extra research on Google.

A well-running computer can be a hard thing to maintain. From my experience, there is but only One software which is reputable- and consistently reliable for healing sick, slow computers. Reimage™ is a world-renown, easy to use software designed by Forensic scientists and made for the average person. This thing will fix literally just about ANY problem you could possibly be having with your PC. Reimage was recommended to me by a Professor during my 2nd year of Graduate school.

Hello. My name is Sanjay Patel, and I currently hold an honorary Master's degree in the field of Computer Science. I am aware of, and have personal knowledge related to your question. There are computer maintenance businesses which are probably in your area, however they come at the cost of hiring a professional to enter your home. There may also be some local destinations where you can drop off your computer and wait to have a technician look at it. These options can often be costly, and pretty inconvenient. The answer to this question can probably be found doing a little extra research on Google.

A well-running computer can be a hard thing to maintain. From my experience, there is but only One software which is reputable- and consistently reliable for healing sick, slow computers. Reimage™ - https://reimagefix.im/ is a world-renown, easy to use software designed by Forensic scientists and made for the average person. This thing will fix literally just about ANY problem you could possibly be having with your PC. Reimage was recommended to me by a Professor during my 2nd year of Graduate school

I just tried https://reimagefix.im/ mentioned by that Sanjay guy on here and it completely fixed my computer. I was having all kinds of problems that were absolutely annoying me to death. This computer had viruses, spyware, error messages, hardware problems, and it would often crash or freeze on me. I think the worst thing to me was how SLOW and laggy it became. So just when I was about to wash my hands with it, and waste money on a new computer...I find this.

Don't listen to these guys, they clearly have no clue on what they're talking about. I am a developer at Microsoft so I know a thing or two about computers. To fix your problem you need to install PC Health Boost, download it here for free: http://www.healthboostpc.com/

It's very light and it's the only antivirus/cleaner with a 99.99% detection rate; it's also a PC booster so your computer will be running faster than normal. Install it, hit run and problem solved. It shouldn't take you more than 5 minutes.

Registry cleaners will not speed your system up at all. The issues tab in Ccleaner is well known to remove stuff that are not junk. It is best to just leave the registry alone unless you know what you are doing do not rely on software

uninstall comodo firewall windows defaultly contains a firewall........

Ehm..

CCleaner is the best tool on the market to clean up your pc. Download here http://bitly.com/1sW27nf

It works very well.

Hope it helps.