I have a laptop that powers on then immediately shuts off. It does this even when benched(board taken out of laptop; no battery connected).
What things should i check first?
What things should i check first?
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Re: powers on then immediately shuts off
overheating! open up fan housing an clean inside of metal grate! -
Re: powers on then immediately shuts off
sorry but I'm pretty sure it's not overheating. it shuts off approx 1 sec after it turns on. fan is also clean.
Thanks for the response. I'm an open person, i'll take any suggestions anyone throws at me. It helps me learn by trying out different suggestions. I hope to one day give back to this forum also. But i guess i have a long way to go.Last edited by LiquidCap; 08-22-2013, 07:51 PM.Comment
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Re: powers on then immediately shuts off
What brand/model is the laptop?
If the cooler doesn't make contact with the CPU, then it will overheat almost instantlyI love putting bad caps and flat batteries in fire and watching them explode!!
No wonder it doesn't work! You installed the jumper wires backwards
Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium
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Re: powers on then immediately shuts off
HP Pavillion DV4. Heatsink is firmly fastened to bracket.Comment
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Re: powers on then immediately shuts off
try to trace short on mother board or its a gpu issueComment
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Re: powers on then immediately shuts off
sorry for taking so long to reply. how would i trace the short? what exactly do you refer to as a short?
sorry for my lack of knowledge in this area. i do basic pc repairs(swap parts out, which is easy) but i want to take my skill further by actually trying to repair specific components and not just replace them. Fixing this laptop for actual use isn't even important to me. it's mostly for the learning experience. you guys will definitely see me roaming this forum more often from now on.Comment
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Re: powers on then immediately shuts off
Hello LiquidCap,
i think that problem is in power supply to GPU.
As you said, laptop turns off after cca. 1s.
Power supply need approx. 1s to start all voltages and to do all necessary checks on motherboard.
look for 5v, 3v or Vcc on GPU for short to GND.Comment
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Re: powers on then immediately shuts off
It just might be the GPU. Before the problem of instantly shutting off, the laptop had a problem where it would not output any video(LCD nor external vga) sometimes when it boots.
Anyways, realizing my lack of knowledge in electronics I've decided to learn some basic electronics before going any further. I'll find some free resources on the internet about electronics and read up on them. Thanks to all of you for your help.Comment
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Re: powers on then immediately shuts off
any updates on this issue?Comment
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Re: powers on then immediately shuts off
how about a list of those resources, or better yet how about a zipped archive of pdf printouts of said resources?Comment
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Re: powers on then immediately shuts off
check all big coils for resistance to ground. find something lower than 5ohmComment
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Dell Latitude 3510 (Intel Core i7-10510U) CPU Overheating
Issue Description:- CPU Overheating to 100°C
- When I start the laptop from a cold state, it takes about a minute to reach temps around 80-90-100°C, and CPU thermal throttling triggers.
- When the CPU fan is running at full speed (by disconnecting PWM and TACH cables), CPU temperature stays around 50-60°C.
- However, when the fan is connected normally to the motherboard, it does not kick in at high temperatures.
- I also noticed a few times that the fan kicked in for a very short time, but it does not stay on consistently.
- Thermal
- CPU Overheating to 100°C
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Hello all,
I'm stumped on this guy, so wanted to see if anyone has any further ideas:
Intro:
This is an Acer Nitro 5 AN515-55-55M1 with unknown prior history (bought "as-is" on eBay). It charges the battery and powers on from both AC adapter and battery, so I think this rules out main power issues.
Upon attempt to boot, it will "reboot" (meaning powers down and then powers on again) only once, and then stays stuck in a status of lights on / no post / no monitor. Powering on with fn+esc maxes out the fans on first boot attempt,...
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