Case 1 : Broken harddisk

If your harddisk is broken and replaced, the engineer from HP may have installed Microsoft Vista. You have to go through two steps to recover Windows 7.

Step 1 - Re-partition the harddisk
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a) Insert Silicon Power 8GB USB stick. (with Hiren's BootCD 10.6)
b) Turn on the notebook.
c) Press "Escape" button on the top left hand corner of the keyborad.
d) Wait for a menu and press "F9 Boot Device Options".
e) Select "silicon power"
f) Follow the steps in this video : 如何還原 hp dv7 手提電腦的 Win 7-Part 1 of 2 (Acronis Disk Director)
g) Reboot the notebook.

Step 2 - Restore Ghost image
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a) Insert Silicon Power 8GB USB stick. (with Hiren's BootCD 10.6)
b) Turn on the notebook.
c) Press "Escape" button on the top left hand corner of the keyborad.
d) Wait for a menu and press "F9 Boot Device Options".
e) Select "silicon power"
f) Follow the steps in this video : 如何還原 hp dv7 手提電腦的 Win7 - Part 2 of 2(Ghost)
g) Reboot the notebook.