Answer to: How to open HP Envy 4 and change the RAM and HDD?Hi I own a Envy 4 and it is much simpler than described above. You just have to remove the 12 bottom screws. Open up and you access everything. I choosed to keep the mechanical drive and replaced the 32gB msata readyboost drive with a 180 GB Intel 530 mSata drive. I also replaced the RAM with 2x8 GB RAM from Kingston. It took about 15 minutes to replace the hardware. Then I booted up from an external DVD-player with a Windows 7 DVD in it. In advanced mode I disabled all drives on HD 0. I then installed Windows on HD 1. Remember to have a backup on all your files before, since they will be lost otherwise. When that was done I partitioned HD 1 as one partition. I now have an Ultrabook with 180 GB C: and a 500GB D: and with 16 GB RAM. This really does it, its really superfast to work with. The Windows experience index on hdd is 7,9 and 7,3 on RAM. A tip also is to replace the WiFi card at the same time with an Intel Dual Band Wireless AC 7260. I´m about to do that since the network card in my model(1090eo) didnt...