I am trying to fix a Dell XPS M1530 that has what appears to be a very common problem for this computer, an all black screen, and no ability to turn on for more than a few seconds. The screen remains black. There are articles and videos all over the internet about this problem. It was diagnosed and a repair method posted in this forum link: https://www.techspot.com/community/topics/dell-xps-m1530-wont-boot.136791/page-6 Having read through the whole discussion, I got to the last response, suggesting we start a new thread for this problem. Anyway, I have the XPS M1530 problem. Following the suggestions in the old thread, I removed the fan assembly, and cleaned out the dirt and dust. We tried to get the NVIDIA chip to start working by running the computer with the fan assembly held away from the NVIDIA chip (as suggested in the old thread), which got the NVIDIA chip warm, but not really hot. It was good to see that the video started working, and we "almost" got the laptop to boot - but it would always shut down after maybe half a minute or so. With nothing to lose really, we followed the suggested procedure, using a heat gun set for 600 degrees, and heating the NVIDIA chip for about a minute or so, hopefully long enough to re-melt the solder connections and allow the bad connection to repair itself. Amazingly, it actually seemed to work! It is now three days later, and the laptop has been running during most of this time. I've cleared out the old data, and little by little, done all the Windows Vista updates, apparently from 2008 through now. The laptop seems to be running just fine, and not getting excessively hot. My question here, is does anyone know how long this is likely to last? Are we fixing an original proglem, which will continue to work fine once the solder is melted enough to restore all the connections, or is whatever the defect is in the NVIDIA chip something that will happen again - the appropriate word being "when", not "if". If it's still a ticking time bomb, there is no point in using the laptop, as it will completely die again. On the other hand, if heating the NVIDIA chip with a 600 degree heat gun can fix the defect in the chip, then maybe it's safe to start using the laptop, doing periodic backups, as one would do with any computer to be safe. Any advice?