Why is my computer's downloading speed slow?

Apart from having sufficient RAM and processing speed below are the few tips to deal with slow internet: Try and user Google chrome Its light weight and fast you can get it for free from the following URL http://www.google.com/chrome Download any good System Cleaner such as Reginout from Intel Software Directory (http://ibx.intel.com/directory/ ) to clear Browser history and cache because when the cache gets full, your browsing will slow down.  Make sure system is free of Mal wares and viruses use Avast free and Malware Bytes (FREE) Sometimes your DNS server is not fast enough you can experiment with some third party DNS server Such as OpenDNS http://www.opendns.com. I tested this with two ISP connections found it very useful with One of them, didn’t get much difference in case of second ISP. Always try and use a download manager. There are many free options available Make sure your system firewall in enable and managed to stop unwanted internet traffic  You can control access of programs to internet using windows Firewall

Clean windows registry can speed up the computer. Over time, you install new programs, uninstalled unimportant programs, update software's, install new devices, download files from the web, etcetera, hence embarking all records in the registry system. This is normal, but it is not wise to leave it untouched. Once in a while, you have to check and remove files that are no longer in use to maintain the speed of your PC. Clean registry make pc faster. http://clean-computer-registry.com

How much RAM do you have? Try reseting the router, could just be an issue in the area with your internet provider. Quite a variety of things it could be.

Try unplugging your modem (the power cord), waiting ten seconds or so, then plugging it back in. This resets your computers connection to the internet, and tends to get things back to the way they were at a previous time.

You can follow the Tips Below to Increasing Your internet speed : You need to Update the Speed Manually,You can install the Good, New latest Version Browsers like Fire fox from Mozilla,or Chrome from Google or IE latest Version,Format the OS,don't download many applications and Videos simultaneously ,You clear the Cookies after using the Browser every times,Please Don't place more icons in Task bar and Desktop that will slow the Internet,Then you can check the Speed here, http://www.ip-details.com/internet-speed-test/ after Doing that tips...If not speed increased means Please call the ISP they will fix this Finally.

I highly doubt your Internet connection speed is 54 Mbps. Your network connection may be that speed, but that only runs between your computer and your wireless router. Try unplugging your router and your internet modem for a little bit and then plug them back in. Otherwise, look at how many other people are using the connection or take it up with your ISP.

To make situation crystal clear You need to talk to your ISP and also download reginout to sort out this issue.