Worked great for a while. After being away for a few weeks, started it u0 and "no signal" to monitor. Too late for 90-day warranty. Apparently, onboard video is dead.UPDATE: Turns out that the memory modules needed reseating. Works okay now. Odd that a Ram stick would unseat all by itself, but mysteries happen.NEW UPDATE: Hadn't turned it on for several weeks and now it's dead again. Tried all the tests suggested on the Dell site, but no joy.