Member Avatar for compdict

I just installed a new motherboard onto my case, got the cpu in, and all the connectors connected (I think?), but the computer won't turn on. hard drive, ram etc, are all installed, I really don't know what to do. please help me. thanks. later then.

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  • Latest Post Latest Post by grizgrad94

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Several responders already covered basic checks — on POST/beep diagnostics and on compatibility — and other members reported similar symptoms (, ). For a new board that shows no power or only intermittent life, common but often‑missed faults are: the CPU 4/8‑pin (EPS) power cable not connected or loose; the motherboard shorting to the case because of a misplaced standoff or stray screw; a miswired or failed front‑panel power switch harness; a PSU that runs fans but fails to supply proper rails; and bent or contaminated CPU/socket pins. These should be ruled out before assuming the CPU or board is dead.

A concise bench procedure that isolates the problem quickly: unplug mains and remove the board from the case, place it on an insulated surface. Connect only the PSU (both main 20/24‑pin and CPU 4/8‑pin), the CPU with cooler, and one known‑good RAM stick in the primary slot; use onboard video or a minimal GPU only if required. Short the two power‑switch pins on the front‑panel header to eliminate a faulty case switch. If the board POSTS, add devices one at a time. If it remains dead, swap in a known‑good PSU or measure the PSU rails (12V, 5V, 3.3V). Intermittent power after moving RAM, as reported, often points to poor seating, a weak PSU, or a short.

Check the motherboard manual for onboard debug LEDs or two‑digit POST codes (BIOS vendors differ) and consider a cheap POST card if no speaker is present. Visually inspect the socket area and capacitors for bent pins, bulging caps, solder blobs, or spilled thermal paste. Observe ESD precautions while handling the CPU. If minimal benching and a known‑good PSU still give no POST, the most likely outcomes are a faulty motherboard or a damaged CPU and an RMA/professional diagnosis is appropriate.

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Member Avatar for EMCCleveland

I'm starting off by assuming you have a LED on the motherboard and it is lit showing power to the MB is good.

At this point I'm also hoping your motherboard has a built in speaker. If so then the best thing to do is start by removing RAM, Power off system, remove RAM, power system back on. If you get tones (3 short beeps generally) it means an issue with the RAM.

If this is the case then try inserting just one stick of memory and try and get into BIOS to make certain settings for it are what they should be. If it does not then try removing all other things attached to the motherboard (start with video card) and turning it on again listening for the tones for bad / missing memory.

Member Avatar for compdoc

please list your computer specs.

is it just the motherboard thats new?

is the new motherboard the same as the old motherboard or is it a different brand?

are you using the same ram from the old motherboard in the new motherboard?

is the ram compatible with the new motherboard?

Member Avatar for superg05

i have the same problen i had just bought a XFX nForce 610i/GeForce 7050 1333Mhz FSB Intel Socket LGA 775 DDR2 Micro ATX and a quad-core Q6600 i installed it and it was installing xp went to have a bite to eat came cack the screen was off and as i walked up it shut off and wont come on please help me im freaking out is it possible its the cases power supply that it came with or did my quad core die on it first run

Member Avatar for grizgrad94

I just had a new motherboard and memory installed in my gateway mx6440.
When I got it back, it wouldn't power up. No power light, nothing. My son moved the memory and it came back on. It wasn't plugged in, however, and soon went dead. Now it won't come back on again. Any ideas?

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