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ebdick
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Dell 5160 Keeps Restarting in Bios

Dell 5160 keeps restarting in bios.  Very rarely will it load past bios.  When this happens it restarts in like 1 minute without any notice.  Laptop has a history of running hot.
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cooljai1

8/22/2022 - Mon
ASKER CERTIFIED SOLUTION
roger_ee

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nobus

it can be you need to replace the cpu fan, or the heat paste :
check in the bios the cpu fan rpm, and cpu temp to determine which one.
cooljai1

Hit F2 and get into the BIOS screen now see if the system restarts. If it does, then it could be an issue with the processor fans and the heatsinks. If it does not restart in BIOS then check the OS for any errors. You can also try removing all the peripherals and Expansion cards if any to make sure that its not any one of these which are causing the issues.
veedar

There may be a problem with the Windows operating system on your hard drive. To test this try to boot off removable media like your Windows install CD or a bootable DOS floppy. A free one I like is at netbootdisk.com
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ebdick

ASKER
1) Took apart laptop and fan was dirty.  Cleaned fan and area around.  It appeared that fan was clogged.

2) I looked pretty closely and capacitors do not seem swollen or leaking.

3) New problem now.  When computer starts the screen stays black.  I put together the computer twice to see if I forgot to connect something but everything seems to be alright.  I also took out the memory (bottom of laptop) and put it back in.  Still, the computer screen stays black.  When I turn it on and off the screen lights up but stays black.  I do not know what to do.  
ebdick

ASKER
It is possible that the shield under the keyboard is not put on correctly (I read somewhere that it is supposed to touch a video card case or something like that).  
cooljai1

Do you have an external monitor, if yes, connect that to the laptop and restart. Check if the display is available on the external monitor. if there is a display, There is a video connector just under the keyboard, that could be the reason. Try reseating that.
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ebdick

ASKER
Checked with external monitor and still a black screen.  The video connector under the keyboard is plugged in.  The metal shield under the keyboard had pins on it and they broke.  I am quite uncertain if that is even a factor on why the screen is black.
nobus

if it worked before, and now it does not, you did not assemble it correct. check if all connectors and cables are seated properly, take them out for a close inspection
ebdick

ASKER
exactly.  i checked all the conectors and cables three times.  all connected correctly.  the only thing in question is the metal plate under the keyboard.  it had pins underneath it and they broke.  i am not sure if the metal plate is supposed to touch certain areas of the laptop.
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nobus

could be.
maybe this can help a bit :  http://repair4laptop.org/disassembly_dell.html
ebdick

ASKER
No, he rips the Dell 5160 apart.  Does not explain how to put it together.
nobus

putting it together is the reverse of ripping it apart, so you should find something useful imho
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ebdick

ASKER
no, he literally ripped apart.  no unscrewing screws
ebdick

ASKER
"So, I ripped that d*mn thing apart, since you apparently need to remove 50 screws and every component just to replace the CPU fan."
SOLUTION
roger_ee

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cooljai1

Try removing the memory modules, leave them out and restart the system. Check for beep codes
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