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Power switch -> power light ->6sec -> blinking LEDx3 (cap lk, num lk?) -> 12sec -> fan at high speed -> 6sec -> LED stop blinking
The whole time, the screen is black
Yes, Ive done a power reset.
This is a freebie, I had to add RAM 2x4gb=8gb, keyboard is warped (from removing RAM?) I’ve not put a HHD in yet.
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Have you connected an external monitor?
Removed the BIOS coin battery and tried powering on? It may need to be replaced. The machine is 10 years old.
Are you sure the RAM is compatible with that model?
Here’s the url for the HP Service and User manuals:
https://support.hp.com/nz-en/product/hp-...
Troubleshooting Lights and Beeps:
Specific patterns of long and short blinks along with long and short beeps (where applicable) identify errors during the startup process. Newer computers have two-part blink sequences with different color lights to indicate specific errors. The LED blink/beep sequence near Caps Lock and Number Lock keys indicates the type of error:
Note the blinking sequence and use the chart to identify the error condition. Then use the troubleshooting steps to solve the issue. Url to troubleshooting chart:
https://support.hp.com/nz-en/document/c0...
This troubleshooting chart will help.
The video is worth watching a few times until you understand the blinking sequences.
Good luck. Let us know what you discover.
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@aactech This is a "fun" HP - palmrest removal required. My nc6000 is just as bad :(.
This got me i7 E7440s cheap lol.
external monitor?
Not yet, good idea. Now to find one that has a VGA
Removed the BIOS coin battery?
I've not dug into it that far, but I'll try that
The white Caps Lock LED blinks are short.
Yes, I know how to read error codes. Servers, PC, laptop, and most recent a PERC 6/i raid card.
But if the error code is not on the chart, I don't know how to read 3 blinks. The pause between is the same time, So I know it's not 2.1 or 1.2
I guess it could be 3.3, but as I said, it's time is the same
@imwacco Yeah one of my cheap E7440's tested okay on the leads, but when you directly measured the cell it was dropping fast starting from 1.75V, so it was dead. It was also obviously used which is why I checked it knowing I'd need to re-seal it if it was okay.
Do not trust old cells for reliability - especially after 10 years. That was too low after 5 years with a 2015 DOM. Something about the 7440 board and a low CR2032 messes with them...
Good point!
@aactech Maybe the HP has a similar quirk to my used Dells?
I mean the voltage sensitive design scored me i7 (4600U) FHD Touch versions cheap but it's annoying as well because I'm going to be buying CMOS batteries more often. Yeah I did negotiate lol; what I paid screams negotiations involved.
If you want to try a pull and reconnect, fine - just be ready to replace it.
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P.S. flashlight (torch?) held up to the screen does not reveal text or anything
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@aactech (mike)
“Are you sure the RAM is compatible with that model?”
When I started this, I would have bet “Yeah!” But then I read the RAM specs… It gets worse, I did not seat the RAM
Lesson of the Day: Just becouse you’ve been doing it for 35 years, dose not mean you can’t make rookie mistakes.
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