Compaq CQ58-d33SZ Caps Lock blink 3 times

[dmmitrevski]

Hi friends
I came across this forum searching for a solution for my Compaq CQ58-d33SZ The problem is that there is no picture on the display when i turn it on. It turns on and the Caps Lock blinks 3 times then a pause and again and so on. I found the post codes meaning and it says bad RAM so i change couple of sticks but it did not help. Next i disassembled it and measured the voltages on the board. The 3.3v, 5v and 19v are all present. I did not find a bad capacitor as i could measured. Somewhere i read that it might be corrupted BIOS and tried to restore it via usb stick holding Windows key and B but nothing happens. So here i am asking for your help, if anyone of you can help me it will mean a lot.
This is the board

6050A2493101-MB-A02
TPN-I105
HannStar J
MV-6 94V-O
132

[String2016]

Re: Compaq CQ58-d33SZ Caps Lock blink 3 times

try to reseat the memory or try to replace 3 caps blinking signs of memory error

[dmmitrevski]

Re: Compaq CQ58-d33SZ Caps Lock blink 3 times

try to reseat the memory or try to replace 3 caps blinking signs of memory error

I replaced the memory but the dame problem, i tried 1333mhz DDR3 and 1666mhz DDR3 as 1066mhz is not supported.

[KvnTM]

Re: Compaq CQ58-d33SZ Caps Lock blink 3 times

Take a look at the ram voltage. Should be 1.35V.
I bet it is missing.

[mnciks11]

Re: Compaq CQ58-d33SZ Caps Lock blink 3 times

Check if you do have any shorted to ground capacitor or mosfet on the ram power line

[dmmitrevski]

Re: Compaq CQ58-d33SZ Caps Lock blink 3 times

Take a look at the ram voltage. Should be 1.35V.
I bet it is missing.

I could not measure 1.35v near the ram, al the capacitors have 1.49v and the coil near the ram slots has 1.06v
The highlighted capacitor on the image are not shorted
The second pin on the ram slots has 0.8v


https://ibb.co/9Y4SPsf

[dmmitrevski]

Re: Compaq CQ58-d33SZ Caps Lock blink 3 times

Where should teh 1.35v be present?

[dmmitrevski]

Re: Compaq CQ58-d33SZ Caps Lock blink 3 times

This capacitor is shorted to ground

https://ibb.co/v44fYdR

[dmmitrevski]

Re: Compaq CQ58-d33SZ Caps Lock blink 3 times

This capacitor is shorted to ground

https://ibb.co/v44fYdR

I removed it but the same problem

[KvnTM]

Re: Compaq CQ58-d33SZ Caps Lock blink 3 times

Does this board support DDR3L or DDR3 ?
1.35V would be for DDR3L
1.5V for DDR3

You measured 1.49V at the big caps on the ram slots.
This is most likely the 1.5V rail for the ram which is fine.

1.06V is for something else.

How can you tell that this cap is shorted?
The second pin on the ram slots has 0.8V.. What do you mean ?


Please embed your pictures into the post. It is really annoying to open different pages just to look at a picture.

[dmmitrevski]

Re: Compaq CQ58-d33SZ Caps Lock blink 3 times

Does this board support DDR3L or DDR3 ?
1.35V would be for DDR3L
1.5V for DDR3

You measured 1.49V at the big caps on the ram slots.
This is most likely the 1.5V rail for the ram which is fine.

1.06V is for something else.

How can you tell that this cap is shorted?
The second pin on the ram slots has 0.8V.. What do you mean ?


Please embed your pictures into the post. It is really annoying to open different pages just to look at a picture.

Yes the board supports DDR3 not DDR3L so the 1.49v is fine then
I removed the capacitor then there was no short between the pins on the board, when i put it back it is shorted.
I read somewhere that the second pin on the ram slot should have 0.8v that is why i measured it, i don't know if that is correct.

[digitalpc]

Re: Compaq CQ58-d33SZ Caps Lock blink 3 times

try flashing bios

[dmmitrevski]

Re: Compaq CQ58-d33SZ Caps Lock blink 3 times

try flashing bios

I tried flash with usb stick as i mentioned before but it does not do anything so i ordered this programmer from aliexpress, i will post result when it arrives to my address
https://www.aliexpress.com/item/3228...22894c4da2hhBd

[KvnTM]

Re: Compaq CQ58-d33SZ Caps Lock blink 3 times

Try to get a schematic/boardview for the board. Randomly ripping components off won't help at all. I highly doubt that it is a bios failure.

Does the cpu/chipset get warm when it is on?
Did you measure the desoldered cap?

[piernov]

Re: Compaq CQ58-d33SZ Caps Lock blink 3 times

https://www.badcaps.net/forum/showpo...72&postcount=5

For standard DDR3, VDDQ = 1.5V, VTT = 0.75V
HP shows the same code for missing RAM and RAM test error.
Inspect for physical damage in RAM slot and CPU socket, and clean with contact cleaner. Try another CPU if possible.
Could be a corrupt BIOS, but it's not common for it to fail that way.

[dmmitrevski]

Re: Compaq CQ58-d33SZ Caps Lock blink 3 times

Try to get a schematic/boardview for the board. Randomly ripping components off won't help at all. I highly doubt that it is a bios failure.

Does the cpu/chipset get warm when it is on?
Did you measure the desoldered cap?

I searched here for schematics but there is none for this board, there are only for amd platform
I just found this video on youtube with the same board as mine but it has another problem
https://www.youtube.com/watch?v=lpRgRDbhOPI

I son't have osciloscop to measure the capacitor i removed, just a multimeter

[dmmitrevski]

Re: Compaq CQ58-d33SZ Caps Lock blink 3 times

https://www.badcaps.net/forum/showpo...72&postcount=5

For standard DDR3, VDDQ = 1.5V, VTT = 0.75V
HP shows the same code for missing RAM and RAM test error.
Inspect for physical damage in RAM slot and CPU socket, and clean with contact cleaner. Try another CPU if possible.
Could be a corrupt BIOS, but it's not common for it to fail that way.

As i could see there is no physical damage neither on the spu socket or the ram slots, the cpu does not have bent pins either.
I have not tried another CPU though i cleaned the one i have and the socket, also cleaned the ram slots. I will try to find another cpu and give it a try

[dmmitrevski]

Re: Compaq CQ58-d33SZ Caps Lock blink 3 times

Try to get a schematic/boardview for the board. Randomly ripping components off won't help at all. I highly doubt that it is a bios failure.

Does the cpu/chipset get warm when it is on?
Did you measure the desoldered cap?

The cpu warms up and the fan starts spinning, when cooled off it stops, and so on. It is not overheating

[KvnTM]

Re: Compaq CQ58-d33SZ Caps Lock blink 3 times

What CPU and RAM is in the laptop?

Be aware that the HM70 Express chipset in your laptop only supports following CPUs (i3, i5, i7 will shutdown after 30 mins or don't work at all):

Intel Mobile Celeron Dual-Core
1000M
1007U
1020M
1037U

Intel Pentium Dual-Core Mobile
2020M
2030M
2117U
2127U
2129Y

[dmmitrevski]

Re: Compaq CQ58-d33SZ Caps Lock blink 3 times

What CPU and RAM is in the laptop?

Be aware that the HM70 Express chipset in your laptop only supports following CPUs (i3, i5, i7 will shutdown after 30 mins or don't work at all):

Intel Mobile Celeron Dual-Core
1000M
1007U
1020M
1037U

Intel Pentium Dual-Core Mobile
2020M
2030M
2117U
2127U
2129Y

Yes that's right, i checked that too but i do not have any spare cpu from the list. Now it has Celeron 1000m which came with it.