Uefi boot is missing

Question

I have a dell inspiron 15 3511 laptop bought around 3 years ago. The laptop was working fine till around 2 months ago. It started when I used a lower power adapter by mistake, then I started to have boot problems. I'm not sure if the use of the lower power adapter is the cause of the boot problem. The following itmes are tried: 1- When turning-on the computer, I have the following message: Install driver to show hardware. 2- When I use the media installation USB, it allow me to start the installation till seaching for the disk to install-on. Only the disk used for the media installation is detected. 3- On the boot configuration (when selecting F12) I can see a- the UEFI TOSHIBA MQO1ABF050 84RRCQNT (which is the installed SSD SATA drive) b- UFEI HTTPS BOOT 4- On the storage page, we can see the SATA SSD and the M.2 PCIe SSD. ( I added recently the M.2 hopping to be able to boot the system) 5- I tried to reset the battery and CMOS coin battery, but was not able to find the location of the CMOS battery on this laptor. I tried many other approaches, but was not able to resolve this problem. Any help on clarifying how to access the boot system is highly appreciated. Thanks and Regards, Chakerma

ejn63 · Answer

Go into setup (F2 at powerup) and disable IRST (Intel rapid storage/RAID).  Save and restart -- the installer will then find the drive.

Chakerma2025 · Answer

@ejn63​  Thanks a lot for the advise. The proposed solution worked perfectly. I checked for sometimes on the internet for solution, but did not find one till now. Thanks again. Chakerma

Inspiron

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