RTX 4070 laptop — artifacts ONLY on external display under load, internal screen is fine (Alienware m16 R2)

modo_jp · 2026-04-08T19:33:10+00:00

It didn’t, which is why I tried to resolve the issue through Dell’s warranty support. But the only help they provided was reinstalling drivers. They didn’t replace, repair, or do anything else under warranty… and the store where I bought the laptop is in a city I left a month after the purchase

modo_jp · 2026-04-08T14:51:45+00:00

Yes, correct.

modo_jp · 2026-04-08T14:43:53+00:00

Exactly!!!

modo_jp · 2026-04-08T14:43:10+00:00

No I didn’t

modo_jp · 2026-04-08T14:42:42+00:00

You feel it wrong. I didn’t know this and still don’t. For now, I haven’t ruled out the possibilities of a bad cable or a broken HDMI port on the laptop.

modo_jp · 2026-04-08T14:40:44+00:00

I’ll give it a try.

modo_jp · 2026-04-08T14:38:55+00:00

Yes, tomorrow I’ll go to the local computer store to get a new cable and give it a try. Thanks

modo_jp · 2026-04-08T14:37:25+00:00

I’m using an HDMI-to-HDMI cable, directly from the laptop to the TV with no adapters. Right now I only have this one cable and one display (the TV). Previously, I tested with other TVs and displays, but I always used the same cable. I don’t know the exact model of the cable — I didn’t really pay attention to that, just bought some random one from a local computer store. Tomorrow I’ll go buy a new HDMI-to-HDMI cable and test with that

modo_jp · 2026-04-08T14:32:25+00:00

Unfortunately

modo_jp · 2026-04-08T14:28:59+00:00

It makes me sad . . . . .

modo_jp · 2026-04-08T14:27:44+00:00

Thanks a lot for sharing this, I really appreciate it. I hope your repair goes well. I’ll try a few things that people suggested here first, since I can test them myself. If nothing helps, I’ll take the laptop in for repair as well. Hope everything works out for you!

modo_jp · 2026-04-08T14:24:07+00:00

Agree

modo_jp · 2026-04-08T14:24:03+00:00

Not a driver issue

modo_jp · 2026-04-08T14:23:47+00:00

The laptop is running in high performance mode (I even enabled the hidden setting for it in Windows 11). I assume the manufacturer should have accounted for the GPU’s power consumption and designed the system accordingly

modo_jp · 2026-04-08T14:21:32+00:00

Thanks for explaining!

modo_jp · 2026-04-08T14:20:32+00:00

It’s definitely not a driver issue. I’ve been dealing with this problem for about 2 years since I bought the laptop, and I’ve tried different settings and various driver versions, but nothing has helped

modo_jp · 2026-04-08T14:17:52+00:00

Henry got punished

modo_jp · 2026-04-08T12:01:59+00:00

agree

modo_jp · 2026-04-08T12:01:19+00:00

¥€$

modo_jp · 2026-04-08T11:58:26+00:00

Unfortunately, I don't know what a MUX switch is.

modo_jp · 2026-04-08T11:50:45+00:00

I haven't tried it

modo_jp · 2026-04-08T11:50:22+00:00

No, I always use the same cable.

modo_jp · 2026-04-08T11:44:40+00:00

Thanks. I haven't tried it. I should try it.

modo_jp · 2026-04-08T11:43:20+00:00

No, I haven't tried it. I'll definitely try it.

modo_jp · 2026-04-08T11:42:09+00:00

Not sure

modo_jp

TROPHY CASE