Windows 7 - safe mode reboot loop

[solomon]

Greetings.
After the usual 90 days ran out, I restored the first snapshot. I need the 3D Acceleration, hence i need to boot into safe mode for the guest additions.
But, as told in the title, I get a reboot loop. It doesn't matter if I have automatic restart deactivated or if it is the safe mode with or without networking.
I then made new vms, so it would be a fresh configuration, but still no success.
Could this have to do with the new update of Virtual Box?
I'm on a Debian Host.

Any help would be much appreciated.

[socratis]

After the usual 90 days ran out, I restored the first snapshot

You realize that this doesn't reset the 90-day trial, right?

I then made new vms, so it would be a fresh configuration, but still no success.

Please be more specific.

Could this have to do with the new update of Virtual Box?

No.

Start fresh. With a Win7 ISO from Microsoft. See how it goes...