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Question

HELP - No Signal after factory reset

Aug 6, 2017 4:31PM PDT

Hi everyone,
So coming back from vacation, my pc started being rellay low, having fps drop in games, and a hardrive use of 100% . So I tried to restart it but it didn't manage to start.

So i deceided to reset all my pc and remove the dust inside. I started by tryng to reset it. However it froze at 32% during a whole night. Then I shut it dow and power it again. It told me that there was no os installed.

I though it was a good idea to do a really full clean up. So i ordered a new hard drive, some thermal paste. I cleaned it up removed all the component, take of the dust and put the component back in. Then I powered it on.

Every single fan was on. However there was no display. I switched cable, monitor, graphic card and even tried internal gpu. So here I am stuck, hoping that it is not a motherboard problem.

Here are my spec :
CPU : i7 2600
MB : Asrock h61 pro btc
RAM : 1x4go Gskill 1333mhz, 1x4go noname 1333mz
PSU : ANTEC VP 600p - EC
CASE : Zalman z3 plus
CPU COOLER : BEQUIET pure rock
HDD : Western Digital blue 1to (new), hp 1to (old)
SSD : Crucial 256go
GPU : Sapphire r9 380 (actual one), VTX Radeon HD6950 (old one)


Feel free to ask me any question, and sorry for my really bad english,
Thank you.

Discussion is locked

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Answer
Most common I run into?
Aug 6, 2017 4:40PM PDT

1. They pulled the CPU. Remove and check contacts, socket and reseat. Little fresh compound and button it up, retest.
2. The GPU is not plugged it. For this test I remove the GPU and see if onboard video shows up.
3. RAM. Pull both, give the RAM sockets a blast of canned air, install one stick, test.
4. The machine is old enough to have a failing CMOS battery, measure, replace if under 3.0V. No Volt meter? Replace, reset CMOS (see manual), test.

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I tried and
Aug 6, 2017 4:56PM PDT

Well than you for that quick response. As I mention before i already remove all the parts to clean them so nothing on that . I just tried to reset the CMOS and nothing hapenned. Any other idea ?
.

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I was unclear.
Aug 6, 2017 5:42PM PDT

I repeat a lot of what the owner did since I have to inspect the socket for bent pins and the CPU for issues on its contacts. Then I get to feel the CPU "seat" into its place so I know it's installed and seated.

As to the CMOS battery, do you have the Volt meter? If not, I can only guess you are guessing as to it's condition.

Finally we run into machines that this clean up caused a latent issue to pop up. Remember I will not list all that I run into but the top find. For this one we find the person who put in the motherboard installed too many standoffs. The owner will tell you "It worked fine for years" but there it is. Test? Remove the motherboard and see if the motherboard comes alive on cardboard and the few parts needed to POST.

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Sorry but
Aug 6, 2017 6:12PM PDT

English isn't my native language so I can't fully understand what are you talking about (plus you're using word that i dont fully understand)

There is no problem on the CPU, no bent pins I cleaned the old thermal paste put some new one, and made sure it is locked on the motherboard.

I don't have a volt meter however i reseted the CMOS via the instruction on my motherboard.

I didnt understand the last part : I guess you're talking about checking if the motherboard is working. I already tried to boot my pc without the gpu but nothing happened. So if you could try to explain what should I do it would be very nice.

Thank you very much for your help.

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About the CMOS battery and videos.
Aug 6, 2017 6:17PM PDT

Post was last edited on August 6, 2017 6:18 PM PDT

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Hi
Aug 7, 2017 9:21AM PDT

I don't know I just reseted the CMOS battery.
Yup im doing the cardboard part with bob (see below) .
Than you very much any other ideas?

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Here's the deal on the CMOS battery.
Aug 7, 2017 9:32AM PDT

Many models don't boot or do odd things when this battery is too drained.

Is the budget that tight that you'll risk all this work over a dollar part?
Yes, a Volt meter is about 10 bucks on Amazon but it seems a shame to skip over a simple common part at this point.

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Okay but
Aug 7, 2017 9:39AM PDT

But below bob told me that buying a cmos battery is cheaper like around 1$. Isn't it more interesting to just buy a new CMOS battery?
thank you.

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Maybe tree fiddy in some parts (that's a joke line.)
Aug 7, 2017 9:51AM PDT
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Answer
one stick of RAM
Aug 6, 2017 5:44PM PDT

Sure it's installed fully? Check again. Is there an extra power pins usually on right rear area and did you put the 4-6 pin plug on it from the PSU? All fans running, but are they all hooked to motherboard? CPU fan running? When you try to boot, do you get any readout at all, even before windows boots? See BIOS choices before screen blanks?

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HI
Aug 6, 2017 6:05PM PDT

Hi and thank you,
So i mentionned before all fan are running so yes the cpu one too. No the two cards i tested have 2x6 pins connector so i plugged them in and the fan are running. I don't know is there is nothing on the screen because the screen doesn't recognize my pc.

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I have to go with Rob on this one
Aug 6, 2017 6:13PM PDT

I think the most logical problem area is the CPU install.

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Answer
Make it smaller
Aug 6, 2017 6:30PM PDT

Psu+mobo+cpu/hsf+one stick of ram.

Plug the monitor into the mobo.

Nothing else plugged in or connected.

If you don't get a display replace the cmos battery.

If you still don't get a display swap ram sticks and ram slots.

Did you remove the cpu during this cleanup?

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Soo
Aug 7, 2017 9:20AM PDT

I just did the cardboard thing. CPU + MB + COOLER + RAM (1stick then the other) + PSU. 24 pins + ATX 12V pluggued. CPU fan too. HDMI from mb to screen (both of them work with another computer).No signal.

I tried with the gpu too (fan running even without the 2x6 pins).
No signal.
Thank you but do you have other ideas ? Should I buy another mb ? Sad

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I'd spend the dollar for a new CMOS battery first.
Aug 7, 2017 9:32AM PDT

Nod nod nod.

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okay but
Aug 7, 2017 9:38AM PDT

Isn't it weird that my mb wich is maximum 2.5 yo is already dead ?

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I'm not there so
Aug 7, 2017 9:47AM PDT

I will share what cheap part it could be. There's a saying I heard long ago when you're unsure what part it is.

"Replace the cheapest part first."

Now I am equipped with a Volt meter so I can check the battery in place and save the dollar charge but many don't have the gear.

So yes, a new motherboard would be an option but this can snowball into more costs such as needing a new Windows license and so on. This is why I try the cheap part first.

-> Now that the motherboard was pulled, another thing I would try is to pull the CPU and inspect the socket for bent contacts. It must be flawless. Then I put the CPU back in and "feel" it slip into it's place. You know this feel after a few installs. Little fresh compound and on goes the heatsink. Then test.

Post was last edited on August 7, 2017 11:16 AM PDT

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Just checked
Aug 7, 2017 10:30AM PDT

There seems to be no bent pins. I don't buy windows license i just dont activate them because everytime you change the hardware your license get removed. Check my post below to see what's my actual problem.
Thank you very much

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Cmos
Aug 7, 2017 9:54AM PDT

Did you replace the cmos battery?

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she's thinking about it
Aug 7, 2017 10:26AM PDT

At a dollar a pop, it's a big decision. Wink

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no
Aug 7, 2017 10:29AM PDT

I'm just so mad I have to replace a little part without being sure its the problem. I have already spent 52€ on this pc a week ago and I couldn't play for one week. So here's the thing i could spend more money and time replacing the cmos battery or simply buy a new mb so i'm thinking about it. What do you guys think Is it 100% the mb causing this problem ?
Thank you again

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Your call
Aug 7, 2017 10:38AM PDT

A cmos battery is cheap and easy to change.

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Battery
Aug 7, 2017 10:49AM PDT

Verify you have a cr2032 in your machine.

If so then yes.

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This is why I use a Volt meter.
Aug 7, 2017 11:18AM PDT

It's something I've used for decades and with it I could be sure. But here we are and you seem to want a for-sure-this-will-fix-it answer. I don't see a lot of dead Intel CPUs (rare) so the motherboard or its battery is high on the suspect list along with case shorts, etc.

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okay
Aug 7, 2017 11:22AM PDT

So do you have any clue which cmos battery should i get because i can't find the specs of mine even in the manual
thank you

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Battery
Aug 7, 2017 11:33AM PDT

Since you have the mobo out on cardboard just pull the old battery out and look for a number.

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Thank you guys
Aug 8, 2017 9:30AM PDT

I'm going in vacation so when I'll be back, I'll command the battery and tell you what happened. Thank you a lot for your help.

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im back
Aug 31, 2017 9:30AM PDT

Hey so I replace the cmos battery. Nothing happened when i tried to start the . Even worse : when puting back the old battery even the fan wont spin .... any idea to save the pc ?