Just In: I have not even the craziest PC skills. But this installation was a fantastically easy. After the computer was in SSD (previously 160GB hard drive with Win XP on Intel SSD 180 GB 330 Series) I have Win 7 Prof, 64 bit DVD loaded and off we went. The installation took about half an hour and the operating system looks for virtually all drivers alone. Now my four year old HP Compac PC has mutated into a really brisk box. Win 7 boots up in 25 sec., And the performance index shows positive at 5.5. I can every HP 8710P owner only recommend time to think about an upgrade. I'm flat as the entire performance has become a fast, smooth whole. I'm not a player, and have mostly just image editing and graphics programs on the system. Photoshop CS5 Extended for example, starts in 4 sec. - 8 sec CS6 Extended.. Browser and other smaller applications in about 2 seconds -. Just great. Even very stable, without the slightest interference. And price can not complain: 135 euros for the Intel SSD and 40 euros for Win 7 Prof .. So in this calculator and SSD combo just amazing !!!!!