|Your computer does not "take" internet bandwidth - it uses what is available to it.|
There are many things that determine how much bandwidth you have available on the internet.
See Response 2:
The max internet speed you get varies considerably depending on which web site you're connecting to, and how busy the site is at the time you access it.
If you want to compare your internet speed at different times, you need to test your speed at the same web site, doing the same thing.
E.g. I get the highest numbers from this web page - you may get higher numbers from a different one depending on where you are on the internet
I choose the same test and the same server every time. What you get for the max speed at a particular time varies somewhat depending on which server you choose - I get the highest numbers from a server in Canada (I'm in Canada).
The first run of a particular test is the truest indication of your internet speed from the site. If you run it again right away or within a very short time, the subsequent tests will likely yield a false higher result because part of the data is already on your hard drive.
Universal DSL/ADSL stuff.
See the latter part of Response 1 here:
Wnen a DSL or ADSL internet connection becomes poor, you often get no indication via an led that it is poor, unless it's so poor you're not getting any connection at all and the led is off, and the connection speed usually does NOT improve when whatever caused the connection to be poor is no longer there.
When your internet connection speed is poor, try re-setting the connection.
To do that while Windows is running...
If the DSL or ADSL standalone modem, or combo modem / router, has a power switch, switch it off, then switch it on. If it doesn't have a power switch, unplug the power adapter's cord at the device (pull on the plug, NOT the cord), plug it back in.
In either case, wait until one of the leds on the front of the device indicate that you have a working DSL or ADSL connection.
(If that takes a long time, you probably definitely have a problem mentioned in the Universal DSL/ADSL stuff.)
If you're using a wireless network connection between your computer and the high speed modem, or whatever connects you to the internet, there are additional things that can be wrong.