Just to follow up as I have been working with the Dell support behind the scenes....   At some point the Dell support agreed my system was suspicious for having a hardware defect and arranged for a service.   I got a new mainboard (including RAM, CPU etc, since it is all soldered on the board). After that I even got worse BSODs every few hours and I started pretty tought load and memory testing.    No errors were to be found. So as a last resort I reinstalled Windows from a vanilla image (not the Dell factory image). And since then.... all is good. So far...   Btw, to address koortla's comment. Well... on my 7520 the RAM is running at normal speeds... even under BIOS 1.9.3. I think they just reduced the timings, not the frequency. 
Hi all, Just bought a brand new Latitude 7520-KPC7R (i7-1185G7, 16GB RAM, 512GB SSD) and was happy for a day or two to receive a well build machine.  But then, issues start to develop. 1) The system randomly freezes. It just stops doing anything. It doesn't react to key presses, mouse or touchpad. Only option is to force a reboot with holding down the power button. 2) Sometimes (but often enough to be annoying, like every 2nd day or so), windows crashes with a blue screen reporting a CLOCK_WATCHDOG_TIMEOUT error. And then during the "collection information" phase in the blue-screen, the system freezes. Same again, can only hard reset the machine. 3) Same as for 2), sometimes the machine just shuts off. Screen goes dark, and it looks like it entered some power saving mode, but there is no way to wake it up again. First of all, the system should not go into power saving mode when I'm working on it and have the settings adjusted accordingly, but second, why doesn't it wake up again by pressing a key, moving the mouse or touchpad? So, I'm more inclined to think, it actually crashed. Of course I did all the "normal" things, like update BIOS, even the firmware of the SSD, all the drivers and Windows itself. Running the Dell Command Update and Windows Update both say the system is up to date and there are no new drivers or software packages to be found. Also I ran the Dell Diagnostics, Windows Memory check etc, no problems found. I don't know I should work with this machine. I started pressing CTRL+S every three seconds now, just to not lose what I have been working on in the next crash. I'm just out of options and by now think there is a hardware problem. What do you suggest? Btw, number 4) the system fan is really annoying. Even the slightest load on the system puts in in overdrive and blasts away. I did NOT expect that buying a $2000 business machine. Under normal working conditions like having open word, excel or an even in light multimedia applications like watching a mp4, I expected the system to be dead silent. Yes, I know I got the top end Tiger-Lake CPU, but it is a 15" computer, not exactly super slim, without dedicated GPU. Shouldn't be that hard to keep the temperatures controlled... but maybe, that is part of the problem? EDIT: Oh, just saw Dell released a new BIOS 1.9.1 but the notes say nothing about hibernate/sleep/freezing issues. For sure can update, but probably won't make a difference. Thanks, Lars
Brand new Latitude 7520 instable