Can I upgrade a laptop Mobile Intel® HM55 Express Chipset Intel core i5 430M to a Intel corei7 3612QM ?

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No for two reasons. The i5 430M is a works in two sockets: BGA-1288 (Ball Grid Array) and rPGA988A . BGAs are permanently mounted on the motherboard. What you buy is what you get. If your motherboard is a BGA-1288, you won't be able to upgrade.

The second reason you can't upgrade to is because the i7 3612QM uses a different socket.

Most laptops CPUs can't be upgraded.
 
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Technically, there's a slim chance you could. Wikipedia says "there are Socket G/rPGA 989 sockets that can take Socket G1/rPGA 988A or Socket G2/rPGA 988B packaged processors", but if your motherboard doesn't have that socket, or your i5 430M is the BGA-1288 model that's soldered to the motherboard, you're out of luck.
 
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It gets worse...

Even if it looked technically possible, the motherboard BIOS must contain the CPU data and that's very unlikely.

Some desktop users know this pain when they buy the parts to build a PC and discover the CPU won't work until the update the motherboard BIOS, but need a CPU to do it... that's because CPU info was added for new CPU's after the motherboard had already come out but a laptop company won't do that because they have no reason to.
 
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I want to upgrade my i3 330m (G1 socket) to i7 2820qm (G2 socket = FCPGA 988) . I have a rPGA 989 socket. My bios version is phoenix v1.15 updated in october 2011. Does it mean the i7 will work on my laptop since that i7 was released in january 2011?

 
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