The power switch was flashing a - 2 and then 1 sequence on this PC, which according to Dell troubleshooting is a bad motherboard. I replaced the motherboard with a refurbished board of the correct model. When I booted up the system, the screen flashed a message that the system was in manufacturing mode and to go into bios to reset it. I tried this using ALT-F, which appeared to reset the bios to default, but upon rebooting, the same message flashed on the screen. To make the problem worse, windows did not load and a message came on the screen saying no boot device was found. I rebooted and this time hit f-12 for the boot menu, which showed the hard drive in the list. I selected the drive and the system booted into windows. I noticed that windows was showing that it was not activated. I assumed that this is a glitch with the upgraded windows 10. I'm thinking that he old board has the activated windows key in bios, but the new board does not. So I used the windows 7 key on the sticker and activated windows and this succeeded. However, upon rebooting I still receive manufacturing mode and the no boot device found message, but using f-12 I can still get windows to load. I went into bios and tried several things, like making sure the hard drive was first in the boot list, etc. Bios is set for legacy mode. I tried to change it to uefi, but this did not work. When I tried to add devices, the uefi setup said it couldn't find the device list. I also tried recreating the boot track from recovery mode, but this also did not solve the boot issue. I am planning to try going back to the original motherboard to see if it can boot correctly, but I'm concerned that I may still have boot problems. My questions are:
- Why can't I get the board out of manufacturing mode?
- Is there a way to get the system to boot up correctly or will I have to reload windows from scratch?
- Is there a chance that the original motherboard will work correctly? Ironically I have found out that the motherboard is good and the original error condition was caused by the add-in video card, not the motherboard.
I really need to avoid a windows reload and appreciate any suggestions.
Solved! Go to Solution.
Manufacturing mode means the board does not have an SLP windows 10 key or service tag.
I put the original motherboard back in and it is booting up correctly again. As I mentioned the power problem had to do with the video card. However, I'm still wondering what the problem was with the new motherboard? I did put the service tag into bios and windows was showing that it was activated, but it still booted up everytime in manufacturing mode.
I did look at the jumpers and there are a couple that relate to the bios. Neither were jumped, which is how the original is set. I didn't try jumping either one.