Why does Vista run so slow?

The biggest complaint about Microsoft’s Vista operating system is that it is too slow, and this complaint is too often true. There are numerous reasons why a Vista computer, or any computer, will run too slow; insufficient RAM, lack of hard disk space, inadequate disk transfer rate, weak processor. Sorting through all these can take time. Fortunately, Vista has a little-known tool called the Reliability & Performance Monitor that will tell you exactly why the OS is running so slow. Here’s how to use it.

First, go to the Start Menu, and then to Control Panel.

When Control Panel opens, go to the System & Maintenance category:

When System & Maintenance opens up, click on Performance Information & Tools:

In the left-hand column of Performance Information & Tools, click on Advanced Tools:

In Advanced Tools, click on the System Health Report:

This will open up the Reliability & Performance Monitor, which will then do a System Health check:

The system health check typically takes about one or two minutes. When it finishes, it will produce a detailed listing of your system health:

It will note insufficient RAM, excessive disk paging, lack of AV software, a weak processor, missing drivers, and numerous other problems, and will suggest solutions to those problems. For example, insufficient RAM and excessive disk paging will produce a suggested solution of more RAM and perhaps using a USB device for ReadyBoost. With this tool, hopefully you can pin down exactly why your Vista system is running so slow.


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