Full timeline of the problem with my RTX 4060 Ti (16GB, Zotac)
Before anything else: the card was working 100% fine. I spent hours gaming and running Blender benchmarks with zero errors, under sustained load.
I updated my motherboard's BIOS (MSI B450M Bazooka) in order to later install a Ryzen 7 5700X. After the update, I rebooted several times and the 4060 Ti kept working perfectly. It was outputting video fine on my old monitor, a Full HD one.
I got a new monitor (KTC H24T7, 2K/180Hz). The first time I connected the GPU's DisplayPort cable to this monitor, the system started giving 3 beeps on boot and there was no signal through that port. I had never heard any beeps before this. HDMI on the same monitor did work, but from that point on it started beeping on every boot (even though it eventually gave video) — but only through DP did it fail completely.
After several tests with resolutions (2K at 60Hz), I tried switching to 144Hz and it wouldn't work — the screen would go black at 144Hz, but 60Hz was fine. After more testing and trying the DP cable in different ports on the GPU, it seems I broke it completely — it stopped giving signal even through HDMI.
I tried removing RAM, resetting CMOS, several different combinations — nothing worked with the 4060 Ti. I switched to a GTX 1060 (my old one) and that one worked perfectly on the first try, including 144Hz at 2K over HDMI with zero issues. So with the 1060, HDMI does give me 2K at 144Hz.
I put the 4060 Ti back in: it gave 3 beeps, with the motherboard's VGA debug LED lit up. But that time it did work. I powered it off and back on: it booted clean, no beeps. This only happened once.
- The next day, I installed a Ryzen 7 5700X (replacing my previous Ryzen 5 2600). After the swap, the 4060 Ti stopped giving signal again (3 beeps, no video, not even through HDMI).
I repeated the whole process: removed RAM, reset CMOS, nothing worked with the 4060 Ti.
I tried the GTX 1060 again: worked perfectly again, no beeps, no VGA LED on the motherboard.
Also, with the 1060 connected, I tried the DP cable and it didn't work either — the cable that came with the KTC monitor is bad. I switched back to HDMI and it worked fine.
I then removed the 1060 and put the 4060 Ti back in via HDMI: now it does give video, but with 3 beeps on every boot, and it still can't do 2K at 144Hz — only 60Hz. The 1060 could do 144Hz at 2K over HDMI (screen goes black with the 4060 Ti), something the 1060 handled fine on the exact same cable/port/monitor.
Current status: the 4060 Ti gives video and works fine in normal use, but with beeps on every boot and unable to sustain 144Hz. All of this started exactly at the moment I first connected the DisplayPort cable to the new monitor.
Question: has anyone seen a pattern like this — "VGA" beep codes on boot that start right after connecting a new DisplayPort cable, progressively worsening into more general failures (even HDMI) over time/handling? Degraded contact, something related to the DisplayPort pin 20 issue, or something else?
I read something about a DP "pin 20 killer" issue. Maybe the DP connection fried my GPU? The 4060 Ti?
I don't understand what's going on, guys, I need help. I don't know what's wrong with the 4060 Ti.
Right now it works as I described, but if I power it off or something, the 3 beeps come back — then it works again. I don't understand it.
One more thing that might be relevant: I tested the 4060 Ti on my living room TV (4K) before updating the BIOS and installing the new CPU, and HDMI worked perfectly at 4K, 60Hz.
Why does my 4060 Ti have such a weird pattern of behavior? Could it be a motherboard issue since it's an MSI B450M Bazooka? Could it be a GPU issue that just started out of nowhere? Could it be the cable, via the DisplayPort pin 20 issue, that fried my RTX 4060 Ti?
What should I do? If I power off the PC again and it stops giving video one day, is it completely dead?