Thanks.
Actually it is weirder than this. I did eventually manage to log in with Firestorm, but still not with the LL viewer. It says I'm logged in but the actual situastion is the one in my picture. I have not changed or updated anything before this happened today. This is the computer/viewer info you asked for: Second Life 5.0.1.322513 (Second Life Release)
Release Notes
CPU: Intel® Core i5-2310 CPU @ 2.90GHz (2893.41 MHz)
Memory: 4077 MB
OS Version: Microsoft Windows 8 64-bit (Build 9200) compatibility mode. real ver: 10.0 (Build 10586)
Graphics Card Vendor: ATI Technologies Inc.
Graphics Card: AMD Radeon HD 7800 Series
Windows Graphics Driver Version: 21.19.0137.0001
OpenGL Version: 4.2.14008 Compatibility Profile Context 21.19.137.1
Window size: 1920x1017
Font Size Adjustment: 96pt
UI Scaling: 1
Draw distance: 368m
Bandwidth: 8000kbit/s
LOD factor: 3.925
Render quality: 5 / 7
Advanced Lighting Model: Enabled
Texture memory: 512MB
VFS (cache) creation time: March 20 2016 08:50:09
J2C Decoder Version: KDU v7.2
Audio Driver Version: FMOD Ex 4.44.31
LLCEFLib/CEF Version: 1.5.3-(CEF-WIN-3.2526.1347-32)
LibVLC Version: 2.2.4
Voice Server Version: Not Connected
December 30 2016 08:40:50