Windows 10: Weird Issue With Dell Latitude 5500

I have a Dell Latitude 5500 from 2019. When I am connected to any power source all works well. When I am away from a power source, I have these weird, random instances where Windows will lock the PC if I use the number pad. This happened on Windows 10 Build 21H2 and still happening on Windows 11 Build 22H2.Any idea what could be causing this? It's really annoying when I'm in a Teams call and it gets disconnected because of this issue.

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No drive found on my internal hard disk on Dell Latitude E5430.

Hello,My laptop (Dell Latitude E5430) was working perfectly till yesterday. But yesterday night, it restarted on its own and ever since, it's stuck at this screen:



Also, inside the BIOS, no UEFI bootable hard disk drive is being listed.



The UEFI flash disk option shown above is that of my bootable pen drive with Windows 10 installation copy.I googled this issue a bit and the results were as follows:

1. one thread suggested that I should run Dell's internal diagnostics to see if there anything wrong with hard disk. I did that but every component, including the hard disk one, passed these internal test.
   
   
2. a second thread suggested that I should try to remove and reseat the hard disk. I did that following Dell's user manual.
3. another thread suggested that I should reinstall my windows 10 afresh. But when I try to do so, the windows installation wizard doesn't list any drive in the hard disk. It's as if it doesn't detect hard disk at all.
   
   

In a nutshell, while the hard disk is being detected, but none of its drives is. However, the hard disk consisted of 3 drives:

1. C: with the windows' and applications' installations,
2. D: with all of my data,
3. E: which was recovery drive.

Any troubleshooting suggestions?I'm sorry I am not able to help you guys with any logs and stuff because I don't know how to get them when I can't get my Windows to boot. I'm not even sure if this is the correct section where I should be posting this thread.. I'm just so confused right now. *cry

A few weeks ago, I had upgraded (not fresh installation) from windows 10 version 1607 to 20H2. The version 1607 installation was a clean one (from scratch, after formatting the hard disk and creating new partitions).

 

Dell Latitude D610 Contrast issue

Hi, My friend is having contrast issues with his Dell Latitude D610 with windows 7 beta build 7000 installed, he says as soon as he unplugs it from the AC power cord, the contrast goes sky high, and he can barely see anything.
I have already tried Google, but theres nothing on windows 7 contrast issue, and i have no clue what is causing it, as the drivers were properly installed. I also have asked professionals on CNET.com and Myspace computer forums, but theres a no go on that. My friend says he needs the issue fixed as soon as possible, as he loves dells, and bought the dell used because of it.

 

Intel UHD Graphic not able to install @ Dell Latitude 5500

Service Tag: 21F4733 For dell latitude