02-02-2014 02:35 AM - last edited on 04-20-2016 12:02 PM by OscarFuentes
I'm got a HP Pavilion m9770be (Product Number VG005AA-B14, Build ID 93WEv6PrA4).
Motherboard is a PEGATRON (very much like this one : http://support.hp.com/us-en/document/c01901210, BIOS version 5.18 07/06/09 ).
My second power supply just died : fuse burned as soon as I try to get back from stand by mode (Winows 7 64 bits) and power supply is not under warranty anymore.
REM : I bought this second power supply 550W because of a new garphic card requesting more power, the old graphic card fan made too much noise.
I've bought a new CORSAIR CM650M power supply (650W).
I've plugged in 24 pins + 4 pins (CPU) + 2 SATA (HDD + CD-ROM connectors : it only "starts " for half a second, then stops.
When plugging in the first power supply (460W) with the first graphic card (=> orignial configuration), everything works fine !
I reset the CMOS, the PWD, disconnecting every power supply cables from the motherboard and pushed the START button 1 minute, etc...Tried different configuration in POWER menu of BIOS (in case of power failure : stays off, power on and auto)
No way, that power supply doesn't want to work with my desktop.
So I went back to the vendor and he tested the new power supply it with a power supply tester and in one of their desktops : it works !
I really can't tell wht's happening, did I miss something important ?
I would like to understand what's wrong because everything works when used separately.
02-02-2014 07:24 PM - edited 02-02-2014 07:36 PM
Because your timeline is not understandable, let's revert to basics. You stated or implied:
1) The computer works with the original hardware. Have now established a timeline and reference point.
2) Have you tried the original hardware, and just swapping out the power supply? This needs to be done to establish the PSU is connected properly to the system. If you can not get to this point, re-check for correct 4 pin.
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02-03-2014 01:49 AM - edited 02-03-2014 01:50 AM
2) Yes, I tried the original hardware (which works fine) , and just swapping out the power supply.
Correct 4 PIN has been connected (marked "CPU").
There's a second 4 PIN connector (no indication on it) which I tried as well with no success.
I check all pins of all connectors with a multimeter : all of them are ok. And like I said : that power supply has been tested where I bought it (power supply tester + test on one of their PCs)
Sorry, it's indeed a CS650M, not CM650M, here it is : http://www.corsair.com/us/cs-series-modular-cs650m-650-watt-80-plus-gold-certified-psu.html
This is very strange, I've no clue what's happening.
Thanks for your answer but still, not working...
02-10-2014 02:21 AM
To be honest, I think there's an issue with my motherboard : PC is rebooting suddenly 1 to 3 times when "cold", after that it stays steady and runs as usual.
Actually, this is not the first time and happens more and more often.
I've used "Diagnostic" F9 at boot time and all tests passed but I'd would not trust these tests 100%...
Motherboard ? CPU ? Any other hardware involved ?