Dell Precision M4700 (Windows 7 pro) starts not once configured with UEFI and Secure Boot

To all those who can help you:

I got a Dell Precision M4700 and I update bios A05. I was intending to move to Windows 8. Everything was fine and the bios update was successful. I started the new bios under Windows 7 Professional (base OS) factory-installed and was very good.

However, I can't get into the bios (not even see the POST from Dell or Logo) after I activate the UEFI and Secure Boot.This before I update to Windows 8 Pro. Now I'm stuck with a blank screen (same LCD not lit) and nothing to start. It's like a dead PC.

Help, please. Is that what I can do or should I contact Dell Support for repair?

Thank you

I fixed it!  Just removed the CMOS battery, the BIOS got reset back to factory default.  So I did:

(1) remove the battery

(2) press the power button to the case of ground

(3) remove the lower panel

(4) disconnect the CMOS battery (it's tedious)

(5) I hit the power button for some time (30 s) to clear the capacitors or something else, it was my theory, but I doubt it's necessary

(6) use it to all back to the start

When I turned it on it turns on and turns off several times before finally stay standing and I was then able to enter the BIOS and all the settings have been restored to factory default.  I am new to Windows 7 on my machine so I'll repeat the process, this time without disabling the legacy option roms!

Here is the disassembly for precision M6700 and M4700 instruction manual if anyone needs:

http://support.euro.Dell.com/support/eDOCS/systems/wsm6700/en/OM/om_en.PDF

http://support.Dell.com/support/eDOCS/systems/wsm4700/en/OM/om_en.PDF

I was talking about the Dell support problem and the guy said he would talk to his superior and see if something needs to be done, so I guess we'll see if something happens.

I hope it works for you!

Ben

Tags: Dell Laptop

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    3 type your Windows 7 product key, and then click Next.

    4. click on use the automated telephone and then click Next.
    If you are prompted for an administrator password or a confirmation, type the password or provide confirmation.

    5. click on the location nearest you from the drop-down list, and then click Next.

    6. call one of the available phone numbers listed. An automated system will guide you through the activation process.

    7. When prompted, enter the installation ID that is listed on your screen in your phone keypad.

    8 Note the confirmation ID the phone system gives you.

    9. under the terms of step 3, type the confirmation ID in the space provided, click Next, and then follow the instructions.

    10. If the activation is not successful, stay on the line to be transferred to a product activation agent who can help you.

    How to contact a Microsoft Product Activation Center by phone
    http://support.Microsoft.com/kb/950929

    Activation and registration of a Microsoft product
    http://support.Microsoft.com/?kbid=326851
    Windows activation: (888) 571-2048
    (888) 725-1047 or 800-936-5700

    Microsoft Activation centers worldwide telephone numbers:
    http://www.Microsoft.com/licensing/existing-customers/activation-centers.aspx
    (This site is for activating Volume License, but if you call, they will help you)

    The phone number is not working:
    Microsoft Worldwide contacts: http://www.microsoft.com/worldwide/default.aspx

    Register Windows 7
    http://Windows.Microsoft.com/en-us/Windows7/help/register
    Register Windows 7 and you automatically receive a series of three welcome to Windows e-mails
    filled with tips, creative tips and other information to you help get the most out of Windows 7.
    You also get a subscription to the monthly newsletter of Windows Explorer,
    where you will find other tips and tricks, as well as special offers.

    Learn about Activation:
    http://TechNet.Microsoft.com/en-us/library/ff793423.aspx

    J W Stuart: http://www.pagestart.com

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