Win 7 will download comlete files

A quick scan by Malwarebytes showed a clean system.

I am using Download helper in Firefox, but I have had no trouble on other systems. No other managers.
I did try Chrome, but that had the same problem.
My system is dual booting with Ubuntu 12.04 on a separate drive. Ubuntu does not have the problem.
My original Win7 install was flaky, so I did a clean install with an iso from MS

Download helper with IE also ?

I've lost count of the times....

use Avast and Zone Alarm.

Are you running 2 Anti-Virus programs?

I am not using any torrents for downloads.

I've tried that. No help.

Ive reset Firefox again. to no avail.

One new piece of info---- I cannot save a Home Page. It will keep it only until I restart Firefox, then revert to the Mozilla start page.

Run it's install file, let it overwrite it all, see if the problem persists. I just had to downgrade from version 26 myself because they've change the download program on the newer one and I prefered the previous download program. I had no problem going backward, all my settings remained, just the program files changed.

and happens across multiple browsers, it could be your router has some policy set against your MAC or IP address which limits it's access to internet. Firewall access area is where to look for that in the router program. Since the Ubuntu has no problem, supposing it's using the same MAC instead of a spoofed one, then might be an IP address problem alone.

I use other PC's on the same router, both wired and wifi. Do you think it might be related to the specific address for this PC? Do you think the router would restrict just this PC?

who controls the router in your home? Maybe someone played around in it with firewall settings and messed things up just for the IP address you are using.

You could force a static IP address on your computer if you wanted, moving it from whatever DHCP keeps assigning it. Although DHCP is "dynamic", what I've seen is the same computers seem to get the same IP address almost all the time due to long lease setting, so when they go back online that IP address is still there waiting for them. This would be the internal IP address the router assigns.

Check router settings and if you find nothing there, then check that windows version's TCP/IP settings.

I am focusing on Firefox as I try things. I have sequentially deactivated my security extensions and DownloadHelper and still the downloads stall. Turning off the router firewall made no difference. I have tried downloaqding with, and without, a home group established and still the problem persists.

I did find this link (http://social.technet.microsoft.com/Forums/en-US/21f2c197-b926-4625-a0ca-efadc4c61048/large-internet-downloads-stall-at-random?forum=w7itpronetworking) that seems to describe the problem. In that case the, the problem was related to SMB2,but I don't know anything about SMB2.

Again, I've lost track of the number of times these download accelerators create trouble. Some to the point of a wrecked OS. If the owner won't remove them, we finalize the bill or forgive and move on.
Bob

with that particular computer and it's OS settings. I just had a fight with Windows 7 networking myself, and am just this side of totally hating it. I found the easiest way around things W7 was trying to force on me was to mess around in the device configuration settings themselves. What should have been easy enough in setting the network group name became a goose chase but eventually I managed. I remember my older daughter had an unpleasant experience in trying to get her wifi to network here since I don't use a default "homegroup" name for my LAN, even with all the key code info and so on entered correctly. My wife's wifi wouldn't work under windows, even with the device files, so I tossed the Zydas third party software on there and forgot about letting windows handle it, and that's an old wireless it shouldn't have had a problem with.

I have done a clean reinstall of Win7 and have run updates and installed MS Security Essentials. These went smoothly. I've tried twice to download Avas using IE11. Both instances stalled. Each time I paused the stalled download and tried to resume. Neither would resume. I'll reboot and try again.

Is there any reason to think the 64 bit version would work?

How about Windows 8?

Wired or wifi?

Onboard (built-in) CAT5 Network Adapter or Motherboard slot Network Adapter?

If motherboard (third-party network adapter) make and model?

If wifi, make and model and usb dongle or internal wifi?

I'd check for a defective network adapter before I went the fresh install route of either installing Win 7 or Win 8. Type of bit (32-bit or 64-bit) only matters if your system is only capable of running 32-bit; attempting to install a 64-bit operating system on a 32-bit system will not work.

At this point, I'm thinking this is a hardware issue or a bad CAT5 cable.

Neither the Windows driver or latest driver from motherboard Mfr site worked. I had to use the driver distributed with the motherboard.

Motherboard ;ECS A740GM-M V7
Realtek Driver: 7.17.304.2010