I have a Dell Studio XPS 435 MT and recently it started to have this weird behavior:
I turn on the no break and I can't turn on the computer, until 5 or 10 minutes later, it starts as normal and gives no problem. If I keep the no break turned on I can turn off and on the computer without delay.
The green light from the PSU is on at the moment to turn on the no break, but the CPU will not start until a few minutes.
I'm thinking I have to buy a new PSU, but I don't want to spend the money if that's not the problem. Also, I'm not sure what kind of PSU I have to buy, because the actual one has all the specs in Chinese (thank you Dell). On the online documents it says this model uses a 360W PSU.
I use my computer to do video post production. Intel Core i7, 20GB RAM, two HDD in RAID 0 and one HDD with the system. I often use external disks connected to the SATA, Firewire or USB 2 ports to backup or data transfer (don't work directly form them).
Thanks for any help or suggestions on changing my PSU (if that's the problem)
It seems to me that the problem is this "no break" setting that is being used and there is either a confilct with it or a corrupted file. The psu is not a problem unless it is causing random freezes and shut downs , if your not getting any of those situations then it's a good chance that the psu is fine.
What happens if you turn off the "no break" ?
Then your issue is with this UPS and not the power supply. What you can do is diconnect the UPS from the computer and run it off a plug strip and see if it does the same thing , if it doesn't then the issue lies with the UPS.
I already tested without the UPS and in different places of the house and it still takes several minutes until the power button responds and the computer starts. Yet, the led signal in the PSU is green.
With the computer doing the same thing being pluged into the wall socket then there is an issue with the motherboards bios because it's working out a conflict of some kind for it to tajke that long to turn on.
You can try loading the same bios file or upgrading the bios altogether but it's most likely going to take a call to the Dell tech support to do that. Dell tends to make it very hard to do things like that.