… from Dell attempt and told that the noise is in a normal range.
To reduce the very loud sound of Dell Studio XPS 435mt, you need to concern with the fans of this laptop has. The fans of 435MT is rated 70 CFM, while 70 CFM may be a little high of a number, besides the fans like Xinence 92mm is rated at only 27.45 CFM. So, to avoid overheating on XPS 435MT maybe the one good fan to use is the Nexus fan. To make it better you can use Anti-Vibration Feet like furniture pads, Anti-Vibration …
… the newest version for your wireless adaptor.
Here’s the link download the latest firmware of DSL modem driver.
… is possible to disable the touchpad anymore
Actually there is simple solution to fix the problem of T500 touchpad messing up while typing. What you need is just pressing Fn + F8 keys on your T500 laptop. There you should see any setting you can use to manage the system. Looking for the touchpad option and choose to only enable the touchpoint and disable the touchpad. This method is works fine whether on Lenovo T500 or T400 laptop.