Ok, this is going to be long. I have a desktop running windows 7 and currently have Time Warner as my provider. I am supposed to have 20mbps down and I'm currently only pulling 9.4mbps. I have a Motorola SBG6580 modem directly connected to the desktop though ethernet.
I've tested my speed through time warner's speed test and speedtest.net and I get the same result; 9.4mbps. I've also tested the speed on my laptop which runs Windows Vista through wifi and I get close to 20mbps. I've also connected the laptop through ethernet directly to the modem and also get 20mbps. I've done speed test on my Iphone and Android tablet using wifi and get 20mbps as well.
I've called a technician from Time warner to check it out and said it was a problem with my desktop.
At this point I'm sure it's a problem with only my desktop and not the internet provider. I have done a virus check using Microsoft Security Essentials and also Malwarebytes and have not found any viruses yet.
I've also tried changing my DNS server to google's and then openDNS and the speed stayed the same both times.
I have done a "tune-up" on the computer which cleared all temp files and other unnecessary junk and still have the same speed of 9.4mbps.
I tried logging in to the guest account to see if it was a problem with my profile or the whole computer and the speed test was the same in both profiles.
I've also eliminated all processes one by one in the task manager and tested the speed after each one and got the same result in speed.
At this point I've read every single forum i could find and tried various other things that were suggested like killing all programs that run automatically at start up or trying to figure out if any programs are connecting to the internet without my knowledge and have not been successful at getting my speed up to 20mbps.
Please, any other suggestions on what could be wrong with my desktop is appreciated. Thanks.