Lenovo g470 shutdown problems (in intervals of 10-12 days)

Hi everyone, I'm from Argentina, so I apologize for my english.
My problem with Lenovo G470 is this: every 10, 12 days it shutdowns and can't use it for a time. I'm doing anything (listening to music, writting a text, etc) or sometimes I'm afk and just doing nothing and it happens anyway. And then, for a time it's impossible to start windows. I turn on the laptop and the Lenovo logo appears, but then just shuts down.
Maybe 4-5 hours later it starts to work ok again. Im not sure aboout this because when this happen i usually leave it there and come back the next day.
I've been reading a lot of posts in this forum about similar problems, but I couldn't find this exact same problem that I have.
Also, this happens on battery or plugged in. Is the same. Another weird thing that occurs sometimes is that when I'm using it on battery and I turn it off, the laptop shutdown, but the on/off button light doesn't turns off. I need to plug it in to solve this.
I don't know if could be related, but I replaced the W7 home basic with the ultimate version. While I had it with home basic this didn't happened, but it was a short time (2 days) so I couldn't determine if this is related. Anyway I have the recovery CDs if a probable solution would be that.
I've read here about solutions like flashing the bios. I didn't do it but I could try it if you think it could work. I don't know if there are new updates. The truth is I'm a total newbie on flashing the bios.
In conclusion, any help you could give me will be appreciate. I'm in the Lost island right now. I can't understand why this happens.
So, thanks for your help and again, sorry for my english.
* I didn't take it to the support because this is kind of random and I really need my laptop.
UPDATE: I forgot to mention that when this happens, I can't turn on the laptop with the on/off button. But if I press space and escape it turns on again, and fails again of course.
Solved!
Go to Solution.

Hi
Welcome To Lenovo Community
We are really sorry to hear about the issue you are facing,
Please try disconnecting all cable and battery from the unit , Now press the power button for 30-40 sec then release , perform this action 4 -5 times , now connect AC adaptor to check by powering on and booting the system. If system is working fine you can shut down and connect the battery to check,
Also try updating the Bios from the below link
BIOS Update for 64bit Windows
BIOS Update for 32bit Windows
In case issue remains same please contact local Lenovo support to have system verified
http://support.lenovo.com/en_IN/feedback/detail.page?LegacyDocID=MIGR-76613
Do give this a try and let us know
Hope This Helps
Cheers!!!
WW Social Media
Important Note: If you need help, post your question in the forum, and include your system type, model number and OS. Do not post your serial number.
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Lenovo G470 Wifi and Bluetooth problem, with drivers maybe?? help..

Hi all,
Please.. could anyone give solutions for me to enable wifi and bluetooth for Lenovo G470, i5 2520, intelHD3000, 8gb ram, 500gb..running on windows 8 pro 64 bit, (maybe could give a link to working drivers), everything else is great but wifi and bluetooth, (not yet try one key recovery and veriface though)
ps, I've already download latests driver from lenovo support but still not working...and tried wifi bluetooth drivers for win7 64, but its not working also, previously run on windows 7 starter 32bit, wifi n bluetooth runs perfect.
thank you

Hi dendie701,
Thanks for posting and welcome to the Lenovo Community,
I’d like to help you with your issue,
Can you please check the below links for the Drivers for the wireless and the Bluetooth for your machine and we can install them a fresh installation:
For the wireless:
http://support.lenovo.com/en_EG/downloads/detail.page?DocID=DS031019
http://support.lenovo.com/en_EG/downloads/detail.page?DocID=DS031021
http://support.lenovo.com/en_EG/downloads/detail.page?DocID=DS031020
Can you try to download them and try again to Turn on the wireless and connect,
But regarding the Bluetooth I’d like to ask you your machine came pre-loaded with windows 7?
And please share with us the details of the Drivers in the Device manager if there's any sign on the drivers?
Thanks and Best Regards,
Soha
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SOLUTION: Press [F2] to Enter Setup does NOT Appear - Lenovo G470

After spending an inordinate amount of time searching the internet about my problem, and then contacting Lenovo (who told me it was hardware and I needed to return all of the laptops I bought), I managed to magically find the solution to my problem. Since it wasn't documented elsewhere on the internet, I thought I'd create a post for it here.
The problem I was having was that my Lenovo G470 laptop did not display Press F2 to Enter Setup during the boot process, and because of this, no amount of hammering the F2 button would allow access to the BIOS. I attempted all of the standard fixes, pulled the battery, held power down for 30 seconds, removed the HDD -- nothing would cause this to appear. Since it was happening on all 3 of the G470s we just purchased, I didn't believe it was hardware. I reached out to Lenovo Premium Support, and after about 3 minutes of discussion, "Paul" informed me that all three machines were defective and would have to be sent back in for repair, and it would take 4-6 weeks for repair and diagnosis.
As I had been noodling around with the machines for a few days, ONE of the three ended up showing the bios options during the boot process. At that point, I had been hitting just about every single key on the keyboard during the boot process, so I couldn't identify what it was that I did that caused the options to appear. A little more troubleshooting and I figured it out:
Lenovo G470 machines equipped with the EFI bios do NOT by default show the Press F2 to enter Setup. The only way to make this appear is to hold the "B" key on the keyboard during power-on. Once you've done that, the options to enter setup will appear and they will reappear at every boot (matter of fact, I've been unable to find a way to make them go away again, no matter what I hold during bootup).
So, if you find yourself with a G470 and you can't enter the bios and F2 doesn't work -- hold the B key during boot. The options should appear and you should be able to gain entry into the BIOS.

tjefferies,
Wow! Thanks for sharing this - will be sure to share with support. We really appreciate your discovery and sharing this with the community. I'm not sure why they quoted 4-6 weeks or repair. Perhaps 4-6 days, counting shipping, but not weeks. Will address that as well.
Do you happen to have your service case number #? WNxxxxxx ? If so, could you send to me via PM ?
Many thanks!
Mark
ThinkPads: S30, T43, X60t, X1, W700ds, IdeaPad Y710, IdeaCentre: A300, IdeaPad K1
Mark Hopkins
Program Manager, Lenovo Social Media (Services)
twitter @lenovoforums
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How im suppose to fix the auto shutdown problem in my iphone 3gs after updating to ios 5.1.1 this problem has made me a mobile ****** in my house and an loser in thing care so if any solution to this problem let me know

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Thanks for the advice. I did check the system.log in Console and found the following altert:
PMU FORCED SHUTDOWN, CAUSE = -122
Now, since my computer is just over a year old, and since this problem happened immediately after applying the 10.4.7 OS update, I found it hard to believe that my hardware could be responsible. After 2 days of troubleshooting, I was stumped; after a 2-hour service call, so was Apple tech support. I ended up doing an archive and install back down to 10.4.5, and all is well.
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