On a Dell XPS M1710 laptop, at bootup there's 2 problems:
using the official dell 130W power supply, it balks saying it can't identify the power supply and you need at least a 130W supply.
we remove the power connection, it boots up and then we reconnect the power and it runs on the AC power.
as part of the boot, the dell computer has a horizontal thermometer as it boots up. it gets to 3/4 across quick and then crawls for 30 - 40 seconds for the last 1/4 of the way. no errors, and it boots OK, but it just crawls. even in the bios, it's set for minimal / fast boot and we get that. and if we set the boot to thorough post, we get the same slow speed.