Here are a couple of questions from clients regarding Windows Vista this past week.
“Im having trouble getting connected to wireless out in public (coffee shops, libraries and some airports). I have a relatively new router at home that works fine. What can I do?”
If you’re having problems connecting to public wireless, it may be because the router or access point is an old one that isn’t compatible with the tuning feature in Vista. That happens a lot with public Wi-Fi spots. If you disable the autotuning feature, you may get better wireless connectivity. Don’t worry, it’s a pretty easy fix:
- Open the command prompt with administrative privileges (see our past post on how to do this)
- Type: netsh int tcp set global autotuninglevel=disable
- Press ENTER
- “OK” message will appear
- Restart Windows (of course) to apply the change
To check to see that it disabled, type: netsh interface tcp show global at the command prompt.
To set back to the default (aka turn it back on), type: netsh interface tcp set global autotuningl=normal at the command prompt.
“I have 4 GB of memory (RAM), but the system only shows something like 3410 or even 2813 MB. What’s going on?”
Lots of people are confused about the RAM limitations in the 32 bit versions of Vista. The problem is that the 32 bit Operating System can only address a total of 4 GB of physical address space. That includes not just your RAM, but also peripherial devices (video cards, etc.) that are memory-mapped. Those devices get their address spaces first, and whatever is left over goes to your RAM.