Pavilion dv7 won't boot

[Msonata]

It indeed is my laptop. I don't know why I didn't check that document in the first place.

Anyway, according to that page, CPU failure seems to be the problem.

[Winos]

Then you may have to get the Cpu out and put it back in.

(You will need thermal paste. ) If that doesn't work you will need a new Cpu.

The problem is, i don't know for sure if that will work becouse i can't tell that it is only the Cpu.

Winos.

[Msonata]

Interesting, I'll look into it.

However, I may have to resort to a repair service anyway since I have no experience in that area.

[Winos]

As long as you take the time don't force anything and be careful. It will be all right. i will guide you.

Don't bring it to guys who claim they can do it. I ended up with a scratch. on the back of my sreen.

It was an official store! and if it won't work you can  better spend that money to a new cpu.

Do you have warranty?

[Msonata]

No, the warranty has already expired.

Yeah, I guess I could try disassembling the laptop by following this guide http://www.insidemylaptop.com/disassemble-hp-pavilion-dv7-notebook/ and this video http://www.youtube.com/watch?v=WLQ98LwNUKI. I wish there was an actual guide of the CPU reseat procedure. But again, I must say that I've never built or taken computers apart; I have only messed with HDD's and RAM sticks.

Also, like you said, it is possible that the CPU isn't the problem even though the led blink pattern points to that. Some people have had similar problems and the CPU wasn't faulty:

for example, http://h30434.www3.hp.com/t5/Other-Notebook-PC-Questions/HP-Pavilion-DV7-1245DX-No-boot-POST-Caps-Lo... and http://h30434.www3.hp.com/t5/Notebook-Hardware-e-g-Windows-8/dv7-1135nr-cpu-failure/td-p/977869.

If the system board indeed is to blame, repairing it will be very expensive. I contacted an official HP repair store and they said that replacing the motherboard will cost about 345 euros (240 euros for the parts, 105 euros for the actual work). For the record, the laptop cost 500 euros.

[Winos]

Well it's your choice.

What do you want?

Winos.

[Msonata]

Since the laptop is pretty much dead, I guess it wouldn't cause any harm to try and revive it.

Is this how I am supposed to do it:

1. Disassemble the laptop and take out the processor.

2. Remove the thermal paste from the CPU and heatsink.

3. Apply new thermal paste on the CPU.

4. Re-assemble everything.

Also, do you have any recommendations on the thermal compund?

EDIT: While the laptop is disassembled, how can I spot other defects (for example, bad solder points)?

[Winos]

Well, you are not lucky you have to disassemble the complete laptop.

http://h10032.www1.hp.com/ctg/Manual/c01918142.pdf

I wish i could give you more detailed information but i can't.

Good luck and let me know if i can help you with anything.

Winos.

[Msonata]

Well, the procedure went quite well, actually. I didn't break anything (at least to my knowledge).

The bad part is that reseating the processor didn't fix the problem. It could be that the CPU/motherboard/GPU is broken and should be replaced. But honestly I don't think that it is worth it considering the age of the laptop. I think I'll just retire it and buy a new one.

Again, thank you very much for your help, Winos.

[Winos]

I think that is the best. I wish i could help you more.

If you want i can advise you on a new one.

Winos.

Ps can you set this on solved (Only if you won't be advised.)?