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PC will not POST with new motherboard

K

Kistel

New Member
Joined
Feb 23, 2011
Messages
77 (0.01/day)
Location
California
System Specs
System Name Desktop / Laptop
Processor i5 4670k @4.1Ghz / A8-5545M
Motherboard MSI Z87-G43
Cooling Xigmatek GAIA
Memory Crucial 8.0GB DDR3-1333 / Samsung 8GB DDR3-1333
Video Card(s) MSI GTX 670 PE / AMD HD8510G
Storage 2x 1TB Samsung Spinpoint F3, 1x Crucial M500 240GB / 1TB HDD
Display(s) Samsung SyncMaster 24" LED
Case Corsair Obsidian 550D / HP Pavilion 14 Sleekbook
Audio Device(s) Gamecom 777 USB 7.1
Power Supply Antec High Current Gamer 750w
Software Windows 7 x64 Pro / Windows 8 Home
Two days ago I had an issue in which a new CPU upgrade did not work. I tried both my 1090T (supported in that motherboard with my BIOS update), and my old 9950BE. Both did not get into BIOS. In my previous thread we came to the conclusion that the motherboard died.

Today I bought a new motherboard - an ASUS M4A88T-M. This supports the 1090T CPU. It claims on the box that it is AMD 6 core ready out of the box. I got new DDR3 RAM to go with it.

I plugged it in today and I have the same issue. When I turn on the power, the fans spin, the motherboard light goes on, and my video card lights go on. But I can not get into the BIOS. No beeps, nothing. It just sits there, lights on, with it's fans spinning.

I know this is not my RAM or motherboard as these are brand new. What about the PSU? It is supplying power to all the parts... I doubt it is the 1090T, as I had the same issue with the AMD 9950BE in my old motherboard.

What can it be?


Yesterday I removed a motherboard in a different PC, upgraded the CPU to an AMD 965, put a new heat sink/back plate in, and have been using it for hours with no issues. So I doubt I am doing something wrong in the installation.
 
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I've had a bad PSU do the same thing to me once. Most likely the culprit.
 
Thanks for the reply.

I noticed a red light flashing under my RAM modules. According to the motherboard manual, it says that light flashes if there is a DRAM issue. I tried booting with one stick of RAM with no luck.

This is a brand-new package of Crucial DDR3 2x2GB PC3 10600 memory. If it is a RAM issue, would the system still POST?
 
It depends on the issue. Have you tried all of the slots?
 
erocker said:
It depends on the issue. Have you tried all of the slots?
Click to expand...

I tried all of the slots.

Without any memory in the motherboard, it has a repeating beep sound. I will assume this is not the motherboard then?

The manual states to hold down the MemOK switch to try and start RAM, however this does nothing.

Also, what are the symptoms of a defective Am3 CPU?
 
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put the mobo+cpu+1stick ram+ psu on a desk an try to power, to elimante case short....try to power with a top of screwdriver(not magnetic one) to eliminate fault of cable of button
 
Kistel said:
I tried all of the slots.

Without any memory in the motherboard, it has a repeating beep sound. I will assume this is not the motherboard then?

The manual states to hold down the MemOK switch to try and start RAM, however this does nothing.

Also, what are the symptoms of a defective Am3 CPU?
Click to expand...

mobo may not like the ram
 
I took the PC down to microcenter, the RAM and motherboard work flawlessly with a different CPU. It was a bad CPU, so I am going to RMA it. I should have a replacement in a few days.
 
Kistel said:
I took the PC down to microcenter, the RAM and motherboard work flawlessly with a different CPU. It was a bad CPU, so I am going to RMA it. I should have a replacement in a few days.
Click to expand...

That was a lot of stuffing around for you, but at least you have the answer for sure this time.
Good luck!
 
Next time just RMA the CPU just in case.....LOL
and I hope their is never a next time...
 
Replacement CPU came in today and is working great so far.

However, I have one concern. Under HWmonitor, it says my Processor us using 141 Watts at its default speed. Is this normal? I was under the impression that it would only consume a maximum of 125w at the default core clock.
 
Kistel said:
Replacement CPU came in today and is working great so far.

However, I have one concern. Under HWmonitor, it says my Processor us using 141 Watts at its default speed. Is this normal? I was under the impression that it would only consume a maximum of 125w at the default core clock.
Click to expand...

I'd say that's just HWmonitor doing its usual incorrect reading.
You're better off using CPU-Z :)
 
They will do more than listed wattage under full load.....
 
jmcslob said:
They will do more than listed wattage under full load.....
Click to expand...

Only if they're OCed, which I'm presuming is not the case here.
 
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