Lenovo Thinkcenter not posting

[HP2]

Hi!

My friend has a Lenovo Thinkcenter M58 type 7373. After a long unused period, the system won't even post. It is impossible to go in the BIOS. The screen shows "no signal". Keyboard lights (such as num pad or caps lock) are off.

When I start the PC, the HDD "crunches" for a few second (the HDD light is blinking), then it stops. After the case and CPU fans start spinning at 100%.

Here is what I tried:
- Unplugging all HDD and CD drive
- Removing the RAM stick (the PC beeped when booting)
- Clearing CMOS with the jumper (CLR_CMOS SP1_DEBUG)
- Switching the power supply voltage switch from 115v to 230v and back to 115v
- Messing with another jumper (CLR_CMOSHW)

Here is the official info on this PC: https://support.lenovo.com/ca/en/documents/pd001918

Thank you!


P.-S.: I apologize for my sometimes-not-that-good English

[Geek-9pm]

Here is the clue:

- Removing the RAM stick (the PC beeped when booting)

Now you need to find a RAM stick that will work.
Beep with no RAM means both the BIOS and the CPU are running and some of the hardware works. But the BIOS can not finish POST  without some memory.


Read over the manual and make sure the jumpers are set right.

[HP2]

Thank you very much! 
I'll try to get a compatible RAM sick. And yes the jumpers are set to their default position.

[HP2]

It is half fixed. The problem was a faulty DIMM slot. So I moved the stick to the 3rd slot and the PC boot. BUT half of the time it does not boot and is beeping. After a reboot, it is ok.

I will try another slot to see if it's any better.

[patio]

You still need to check if it's the proper RAM...perhaps he put in the wrong 1's and gave up on getting it running way back when.

[HP2]

Looks like it is the whole first channel which is faulty. I inserted it in the 2nd slot, and now everything looks fine! (Except that 2gb of ram is less than enough  )

Thank you for your help! 

[patio]

You could try blasting it out with a can of compressed air....and clean all RAM comtacts with a gum reaser....no guarantees though.

[Geek-9pm]

This problem is solved.

[patio]

How so Geek ? ?

[Geek-9pm]

He got it to post. Thanks is what he wanted.

It is half fixed. The problem was a faulty DIMM slot. So I moved the stick to the 3rd slot and the PC boot. BUT half of the time it does not boot and is beeping. After a reboot, it is ok.

So if is half fixed.  Round up to fixed.

[HP2]

He got it to post. Thanks is what he wanted.
So if is half fixed.  Round up to fixed.

And now it is fully fixed! I moved the RAM to the 2nd slot and the PC boots without problem every time 

Looks like the whole 1st memory channel is faulty... Anyway it is running. Installed Windows 10 and it runs nicely even with only 2gb of RAM.

Thanks everyone for your help!