Quantcast HP Pavilion DV6500 Reboot Loop

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  1. #1
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    Default HP Pavilion DV6500 Reboot Loop

    I have a client that brought me their HP Pavilion DV6500 laptop (Windows Vista Home Premium edition) that seems to have a severe issue.

    When you attempt to power it up the lights above the keyboard all light up and you can hear the hard-drive spin up but then it reboots itself and begins a continuous reboot cycle. Nothing at all appears on the screen ever. The DVD/CD drive spins up momentarily (indicated by the yellow LED) but powers off when the laptop reboots itself (as one would expect).

    The only way to stop the continuous rebooting is to press & hold the ESC key; this prevents the computer from rebooting, the lights stay on, but nothing appears on the screen and the DVD/CD drive will not read the recovery disc(s).

    I have taken the following trouble-shooting steps:
    1) Unplugged the unit from AC power & removed the battery. I was sure to hold in the power button for 30 seconds to ensure the capacitors were properly drained. This reset did not fix the issue.
    2) I reseated the RAM and switched the RAM sticks (there are two of them) in trying to determine if it is a RAM issue; no affect with this attempt either.
    3) Have attempted to boot into SAFE-MODE many times with no luck.

    Any suggestions or is the unit now a door stop?

  2. #2
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    Default Re: HP Pavilion DV6500 Reboot Loop

    You're not able to get into BIOS Setup either? If you can, run the HD test program.

    But I suspect that you can't, in which case I also suspect that you have yet another defective NVIDIA GPU.

  3. #3
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    Default Re: HP Pavilion DV6500 Reboot Loop

    Its probably toast, but you only tried the recovery cd's...have you tried a vista anywhere cd? I doubt its a OS issue because of the reboots but if ya have a vista cd handy it may be worth a try. The recovery cd's have had a hit and miss issue for some. The thing that concerns me is the constant reboot which sounds to me like the NVIDIA meltdown issue with nothing displayed on the screen it sounds like a motherboard issue.

    Good Luck,

    /Reby
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  4. #4
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    Default Re: HP Pavilion DV6500 Reboot Loop

    It may be worth a try to swap out the DVD Player. My dv9000 won't boot to any CD/DVD. I think the hardware SATA interface may be going bad, or the device itself. Either way, I believe it is a hardware problem preventing me from booting to a CD.

    It definitely does sound like a NVIDIA GPU failure. Tell your client it is a $1200 paperweight and offer to "Bake" the Motherboard for them

  5. #5
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    Default Re: HP Pavilion DV6500 Reboot Loop

    Yes it's a failed nVidia chip. I had a dv9420 come in with exactly the same problem. Baking the board fixed it though. Mmmm, nVidia flavored steak.
    DV5-1120eh: Athlon X2 2GHz, 2GB DDR2, HD3470 512MB, 160GB, Atheros wifi, BT, IDT HD Audio, 15.4" WXGA, 8-cell, blah blah. Windows 7 Ult x64
    DV9000 (9750ed): Turion X2 2GHz, 2GB DDR2, 8400GS 256MB OC, 250GB, Broadcom wifi, BT, Conexant HD Audio, 17" WSXGA, 12-cell. Windows 7 Ult x64 ...and it was $300!!!
    Remap your QuickPlay buttons!

  6. #6
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    Default Re: HP Pavilion DV6500 Reboot Loop

    Smells like not only his Video chip is fried. The motherboard as well... I believe HP Mobo video card even for the dedicated one are integrated into the board. Not like old Dell laptop, GPU is a separated piece.

    reason I say this because if it's only the videocard. Your computer shouldn't reboot. It will just stay on forever without displaying anything.

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  7. #7
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    Default Re: HP Pavilion DV6500 Reboot Loop

    Quote Originally Posted by DJ-R View Post
    Smells like not only his Video chip is fried. The motherboard as well... I believe HP Mobo video card even for the dedicated one are integrated into the board. Not like old Dell laptop, GPU is a separated piece.
    The dedicated ones are soldered on the same board and not removable, yes. But even if it is integrated into the chipset, baking the board or heating the chip using a hot air gun will work. The laptop i was talking about had a Go6150 so it was built into the chipset.
    DV5-1120eh: Athlon X2 2GHz, 2GB DDR2, HD3470 512MB, 160GB, Atheros wifi, BT, IDT HD Audio, 15.4" WXGA, 8-cell, blah blah. Windows 7 Ult x64
    DV9000 (9750ed): Turion X2 2GHz, 2GB DDR2, 8400GS 256MB OC, 250GB, Broadcom wifi, BT, Conexant HD Audio, 17" WSXGA, 12-cell. Windows 7 Ult x64 ...and it was $300!!!
    Remap your QuickPlay buttons!

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    Default Re: HP Pavilion DV6500 Reboot Loop

    Poop! That's what I was afraid of (mobo/GPU failure).
    I GREATLY appreciate all of your input into this problem. Working on laptops is fairly new to me as I generally deal with desktop PCs so I'm in the 'learning curve'.
    In answer to some of the questions posted above:
    BIOS: There is no way to get into the BIOS settings for 1) the screen displays nothing at all (not even a cursor) so I wouldn't even know if I was on the BIOS menu or not; and 2) the rebooting happens so quickly that catching it at just the right moment would be impossible.

    VISTA Anywhere: I don't have a Vista Anywhere disc nor another DVD/CD drive to swap out the old one. I'm kinda stuck with the original hardware on this one.

    I do have a question regarding 'baking' the mobo. I checked the Internet & YouTube and saw how it was done but have any of you had success with this procedure?

  9. #9
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    Default Re: HP Pavilion DV6500 Reboot Loop

    I found this guide a couple days ago:

    Kind of a Guide: How to Bake Your GPU for Fun and for Profit!

    I believe this should have plenty of information for you to try this, if you so desire. More labrats are always welcome, as I think I'll be doing this in the very near future. My HP laptop has cancer, and it is dieing very slowly.

  10. #10
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    Default Re: HP Pavilion DV6500 Reboot Loop

    Quote Originally Posted by Aussie_1 View Post
    I do have a question regarding 'baking' the mobo. I checked the Internet & YouTube and saw how it was done but have any of you had success with this procedure?
    It worked for me. 210C, 7 minutes. Cover everything but chipset/GPU in aluminum foil, and put 4 foil balls under the mobo so it does not touch the cooking tray. Fixed other things too such as my N73 cellphone's board (no more random shutdowns!).
    DV5-1120eh: Athlon X2 2GHz, 2GB DDR2, HD3470 512MB, 160GB, Atheros wifi, BT, IDT HD Audio, 15.4" WXGA, 8-cell, blah blah. Windows 7 Ult x64
    DV9000 (9750ed): Turion X2 2GHz, 2GB DDR2, 8400GS 256MB OC, 250GB, Broadcom wifi, BT, Conexant HD Audio, 17" WSXGA, 12-cell. Windows 7 Ult x64 ...and it was $300!!!
    Remap your QuickPlay buttons!

 

 
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