Question Oldie but Goldie... With Strange

[trebor58]

Hello, I have a Dell M6400 that was working fine, then stopped (just died). I switched it back on, and it did not boot; instead, the No. 9 bag (Num Lock) led flashed 23 times and then remained on. According to the Dell Precision™ M6400 Service Manuals, it signifies a processor error.

So here is what I have tried so far.
1) Removed and cleaned the CPU, reseated it, applied new thermal paste and retried and got the same error.
2) Purchased a replacement CPU, applied new thermal paste, and retried and got the same error.

Now, thinking this is not the processor, I purchased a replacement motherboard and tried both CPUs, but I still get the same error message.

So please, any suggestions...

 

[LordVile]

Hello, I have a Dell M6400 that was working fine, then stopped (just died). I switched it back on, and it did not boot; instead, the No. 9 bag (Num Lock) led flashed 23 times and then remained on. According to the Dell Precision™ M6400 Service Manuals, it signifies a processor error.

So here is what I have tried so far.
1) Removed and cleaned the CPU, reseated it, applied new thermal paste and retried and got the same error.
2) Purchased a replacement CPU, applied new thermal paste, and retried and got the same error.

Now, thinking this is not the processor, I purchased a replacement motherboard and tried both CPUs, but I still get the same error message.

So please, any suggestions...

Can I ask why you are trying to keep this going?

 

[trebor58]

Thank you, LordVille. for replying to my thread. I know they are old machines, but I refurbish them and then pass them on to others.

I should/could scrap this and sell it as parts, but it is intriguing me what is causing this strange error, which I why I posted the question here. Ho[ing that someone may have come across this issue in the past

 

[LordVile]

Thank you, LordVille. for replying to my thread. I know they are old machines, but I refurbish them and then pass them on to others.

I should/could scrap this and sell it as parts, but it is intriguing me what is causing this strange error, which I why I posted the question here. Ho[ing that someone may have come across this issue in the past

These really shouldn’t be used regardless unless you really need some niche legacy software and never connect them to the internet. They won’t run W11 and aren’t secure. I don’t think they’d run W10 well considering they’re vista era machines. At this point you’re better off recycling them

 

[trebor58]

Thanks again for your reply; however, I have sold at least four of these, all of which are running Windows 11 23H2 & 24H2. I have one here ready to go, which is also running Windows 11 24H2 and have never had any problems... Okay, they don't officially run Windows 11, but with that said, they do run complete with all drivers and software up to date.

I have also sold the bigger M6500 and the M6700, all with Windows 11 24H2