Today my computer suddenly had a problem, basically died, and I had to format it, reinstall everything and etc.
The issue is that I had screenshots, some of which were quite important to me ( screenshots of unique and memorable moments and etc). Unfortunately, I didn’t have time to make a backup, as my computer died suddenly.
Is there any way to recover them or are they lost forever? 
EDIT: I’m sad. :c
If you did a format/reinstall then the odds of recovering anything are astronomically low. As in, professional data recovery organizations that cost tens of thousands of dollars might be able to recover a couple bits at most.
If you just deleted files, then those can be recovered as long as they haven’t been overwritten yet.
Unfortunately screenshots aren’t stored serverside, they’re exclusively on your PC.
If you’ve done a total reformat the chances are…slim. Of recovery. You can try one of those programs that will attempt to retrieve deleted files, but all that data may be gone 
They’re gone. WoW screenshots are simply saved locally in a Screenshot folder. Data recovery where you send your drive off is expensive and may recover nothing.
If your computer’s reformatted, they’re gone.
Every so often, just make a back up of the screenshots folder and put them on an external harddrive or the cloud.
They’re gone, always backup your data. Sorry man 
With Windows 11 as unstable as it is, I’ve resorted to the option windows gives you to back everything up to their cloud storage, so if I ever have to reinstall it just downloads all my files back where I had them from their cloud. Sadly if you reformatted though and had no backups they are 99.99999% gone.
I mean not everyone can do what I do, but I never store anything important on a Windows machine. Period. I have a Linux server (which also runs my network), and I stuck Samba on it, and I use it to store everything that’s important (Samba making it easy to just copy stuff to it over the network). It just appears as a network drive to the Windows machines, and as a side effect makes it super super easy to transfer files between computers.
The server runs on an NVMe SSD, but it has a secondary 4tb NAS hard drive used solely for storage. It does pretty frequent checks on the drive, and it’s set up to page my phone if there are any errors detected, so in the event the drive does eventually go, I’ll have plenty of time to transfer data first.
The answer is maybe. It’s highly dependent on exactly where they were on the physical media, and how you formatted the drive.
If you did a quick format, and no files exist on the physical sectors of the drive, there’s a chance they exist in unallocated space, which you can search with a tool like autopsy.
That happened to me once and I lost 2 years of screenshots and memories, as well as RL photos and emails from guild mates in Everquest. It’s devastating.
Yeah this is a good point…but there is an extremely high chance that the reinstall done after the format would’ve overwritten anything remaining. Can’t hurt to try I guess.
It depends on how big the drive is, and what type of drive it is.
They are a lot more likely to be overwritten on a 250GB drive than a 4TB.
But if they were taken over an extended period of time, I wouldn’t be surprised if at least some of them were recoverable.
OP if they’re on an SSD and that SSD has trim enabled the chances of recovery if you’ve continued to use that drive and leave it plugged in are approaching zero after a day or so.
If they were on a traditional magnetic spinning HDD drive then there’s still a chance but you should cease using the drive immediately. All future writes to the drive (and just booting causes writes in the normal OS processes) have the possibility of overwriting that data.
Formatting most of the times is a so-called quick format. It doesn’t actually zero all of the drive (with the exception of SSDs where some tools may call for the drive itself to deliver a charge to all the nand flash to reset it) so the data is not immediately gone. It usually just marks space as free.
Instead the pointers to that data are erased.
If you’d like to try to recover I’d suggest stopping use of the drive immediately. Boot a bootable linux livecd or some OS on another drive, run photorec (you can search that, it’s free, open source). let it run against the drive and save the results to any drive but that one (because you could begin to overwrite the very data you’re trying to save). If you can’t do this from another OS then you can try doing it from your current one (can’t hurt more than doing nothing) but you must save the results to another drive.
There are other tools that are better but most of them are paid though they often have free trials to see what you can recover such as R-Studio and DMDE. I wouldn’t pay for these if you have an SSD and if their free mode doesn’t discover recoverable jpgs in the relevant folder or with the relevant filenames wowscrnshot.jpg
(Though as noted the first things lost are pointers to the file names so they may still exist as randomly numbered files without real names, if you can find a ton of jpgs it may just be them, then again various programs and system files also involve jpgs so there’s no guarantee)
Hundreds in a case without physical failure. Unless it’s an SSD in which case only a few labs seriously have the capability (some will lie and charge you hundreds anyways) and those labs may charge low thousands though in a case like this without any failures it would likely still be hundreds though success rates are low and most likely if DMDE, R-Studio and photorec can’t find anything then there’s little to be done.
OP let this be a lesson to you to back up anything you consider important.
yeah theyre gone forever.