Install Windows 8.1 64 bit on Latitude E6510

Hello forum,

I failed several times at installing Windows 8.1 Pro 64 bit on my Latitude E6510 (from July 2010). Windows 7 Pro 32 bit was pre-installed when I bought the laptop. As I recently upgraded the RAM from 3 to 8 GB, I would like to use a 64 bit system now.

I tried to boot from the installation DVD and the windows flag appears. After several seconds, a message on a blue background pops up: ":( Your PC ran into a problem. We are collecting some information and then we will restart it for you." That is the message, as fas as I can remember. It is only shown for one second and then the laptop reboots automatically. I have got no chance to get into an installation menu.

I already tried a BIOS update from A03 to the most recent version A16 with no success. Boot mode is set to legacy at the moment, I also tried UEFI temporarily, with no change...

Any help would be appreciated.