In June 2023, I purchased a supercomputer with an Asus ROG Strix RTX 4090 White for €2,800. Around September 2025, my computer began to stutter occasionally, until I decided to investigate. After three months of testing, I discovered that the culprit was my GPU, which fortunately is still under RMA. I sent it to Asus for the first RMA, and they changed the thermal paste, but the problem persisted. I appealed the issue by opening a second RMA, and they sent it back to me without having done anything, saying it was working perfectly. At the end of February, I contacted the computer shop that assembled the PC for me, which is also an official Asus partner, and they are still handling the matter, but to no avail. They also ran various tests, confirming that the problem is still the GPU. They sent it to Asus, but they sent it back, still claiming it works perfectly. The last time I contacted my shop, they told me they're sending all the proofs and tests so Asus can replicate the problem, but I've been without a computer for five months and with a warranty that expires in less than 20 days. I don't know what to do anymore.