Yes, I'm a noob in this forum, but just letting you all know I've already tried everything the sticky suggests and looked for possible solutions via search with no success.
tsstcorp cd dvdw ts-h552l ata is my drive. It stopped recognizing discs after I tried to burn a DVD via Imgburn software.
Stuff I thought would be interesting: When putting the CD inside, the cursor has the CD icon flash next to it a few times. The green light for the driver blinks non stop right away when the PC starts. Used the TSST Win Inquiry software I found in the forum, but it took oh so long before it gave me my results (TSSTcorpCD/DVDW TS-H552L, Version 0614, OEM Code HP) and it does that disc flashing thing, too.
I definitely don't want to resort to having the drive replaced, so if there's any other solutions, please tell me.